3rd European Altair Academic User Day

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Also in 2015 Altair will host a European Academic User Day during the company’s official European Altair Technology Conference, from Sept. 29th - Oct.1st in Paris France. The Academic User Day provides students, teachers, professors and researchers across Europe with the opportunity to share their experiences with Altair’s CAE solutions.

The 2015 Academic User Day, on Sept. 29th, offers an agenda featuring 20 interesting oral presentations and a  dedicated poster session. Altair will further more present the latest developments in their educational offering for HyperWorks and solidThinking Inspire.

Who should attend the Academic Day? The Academic Day is tailored to meet the interests, needs and questions of our academic users. Engineering students, teachers and professors are invited to talk about their work and to listen to the presentation of fellow students and researchers.

Why should you attend? Join us to listen to the presentations and to discuss your use cases, work and questions with fellow students, colleagues, industry customers and the Altair staff.

The Altair Academic Day is free of charge and we also invite you to join the Welcome Reception starting at 6p.m. on September 29th. Please join us also for the following conference days.

We are looking forward to seeing you in Paris!


 

European Academic Day

Location: Cité de la Musique

Date: Tuesday 29th September 2015 (EATC: from Sept 29th to Oct 1st 2015).

Begin: 9.30 a.m.

Session 1

9.30 a.m. – 10.45 a.m.

H. Shakourzadeh, Altair France
Welcome & Introduction

Prof. Constantin Meis, National Institute for Nuclear Science & Technology, France
Principles of Multi-Scale Modelling of Materials

Prof. Michel Arrigoni, ENSTA Bretagne, Brest, France
Greener and safer energetic and ballistic systems: ERASMUS+ program for knowledge dissemination

Prof. Paolo Maggiore, Politecnico di Torino; Italy
A Multidisciplinary Teaching Method In The Aerospace Engineering Systems Field At The Politecnico Di Torino

10.45 a.m. – 11.15 a.m.

Coffee Break

Live Demo: HyperWorks Tips & Tricks Poster presentations

Session 2

11.15 a.m. – 1.00 p.m.

Alain Le Méhauté, Institut Franco Quebeco, Paris, Scientific Adviser of CEO at Material Design Company, France
ALM According to ALM - History of 3D Printing

Dr. Piotr Breitkopf, Roberval Laboratory at the University of Technology of Compiègne, France
Reduced order modeling for design optimization with applications to metal forming and inverse problems

Prof. Francesco Gagliardi, University of Calabria, Italy
Introduction to HyperWorks for linear static and non linear quasi static analyses within a project of product development

Prof. Massimiliana Carello, Politecnico di Torino, Italy
The Team H2politO: vehicles for low consumption competitions using HyperWorks

1.00 p.m. – 2.30 p.m.

Lunch & Posters

Session 3

2.30 p.m – 4.00 p.m.

Daniel Trojer, Sebastian Henneke (Hydro2Motion), University of Applied Sciences Munich, Germany
Case Study Of Simulation Driven Designed Components In Use For A Hydrogen-Powered Prototype Vehicle

Raffaele Martini, Politecnico di Torino, Italy
SquadraCorse PoliTO: How We Design Our Electric Formula SAE Car Using HyperWorks

Zsombor Sápi; BME-FRT Formula Racing Team
Impact Attenuator Nose Cone Designing For Formula Student Racecar

Alessandro Messana; Student Team H2polito Politecnico di Torino, Italy
Design And Development Of A Chassis For A Heavy Electrical Quadricycle For The Urban Mobility

Anna-Lena Beger; RWTH Aachen University, Germany
Topology Optimization As A Technique In Multidisciplinary Student Projects

Marek Augustyniak, DES ART Sp. z o.o., Poland
Successful Implementation Of Hyperworks In The Postgraduate Studies On CAE Basics And Applications

4.00 p.m. - 4.30 p.m.

Coffee Break

Session 4

4.30 p.m. – 6.15 p.m.

Carlo Ferro, Carlo Seclì, Roberto Grassi, Paolo Maggiore, Politecnico di Torino, DIMEAS, Corso Duca Degli Abruzzi 24, Torino, Italy, Altair Italy
Topology Optimization Applied to Part Constructed Via FDM (Fused Deposition Modelling) for an Unmanned Aerial Vehicle

Christophe Bastien, Adam Bourdon, Tom Green, Andre Oliveira & Jamie Philip; Coventry University, UK
Driven At Heart – Optimisation And Correlation Of A Morgan

Martina Maio; Politecnico di Torino, Italy
Design Process With Finite Elements Method Simulation

Atanas Zhelev, Martino Hutz, Mariya Korolova, Zaha Hadid Studio Wien / AERO Bicycle
Composite Wood Optimization with OptiStruct, for Revolutionary Bicycle Design

Prof. Umberto Cugini, KAEMaRT Group, Italy
Some Experiences In The Didactical Use Of INSPIRE

European Inspire Ambassadors; “Inspire Students …”

Altair Overview on Academic Program & Best Poster Award

6.30 p.m.

End:

6.30 – 8.30 p.m.

Welcome Reception


 

Poster Session:

Principles of Multiscale Modelling of Materials  

Today, the synthesis, elaboration and manufacturing of new advanced materials is of crucial importance in order to respond to the increasing challenges of advanced technology projects in the fields of energy, transport and space exploration. High performance materials with precise properties are required to be used in particularly extreme environments inducing quite significant mechanical, thermal, and radiation effects constraints. It is generally accepted that the coupling of modelling and simulation to the experimental evidence is the correct way to proceed for understanding the main mechanisms affecting the physical, chemical and mechanical properties of the materials with respect to their environment.

Multiscale modelling and simulation is without any doubt a complete method to understand the origin and evolution of all the mechanisms that govern the behavior of the materials under constraints. It involves the understanding of the electronic structure using First Principles, the defects creation and mobility at the atomistic scale using Molecular Dynamics and Kinetic Monte Carlo, the Dislocation Dynamics, the mesoscale grains description, the Phase Field multiple grain behavior deducing the microstructure and finally macroscopic finite elements methods for the mechanical properties. Despite the fact that the link between all these space-time scales is not an obvious task, depending on the materials in hand, it is the most appropriate way to obtain a complete understanding of short and long time behavior of the materials.

Speakers

Prof. Constantin Meis, CEA - National Institute for Nuclear Science and Technology

A multidisciplinary teaching method in the aerospace engineering systems field at the Politecnico di Torino

The  purpose  of  this  paper is to present the effectiveness  of  a new teaching  methods  through all the graduation process for engineering students,  ranging from the BSc to the MSc level.
Two hundred undergraduate students in aerospace engineering at the Politecnico di Torino were involved in this teaching process. The paper presents the organization of the learning process through the different academic years.

The process implicates theoretical lectures, computer laboratories, and experimental  workbench, and  shows how different multidisciplinary concepts and models, useful for the aerospace systems design, can be presented and then worked again in the next courses. In particular, an example concerning the flight control system is presented underlining how the models can be introduced at the third year, with the support of some engineering  tools, and then reprised and developed in more details at the fifth year, with an effective and quick heritage of knowledge.

Speakers

Prof. Paolo Maggiore, Politecnico di Torino

ALM According to ALM - History of 3D Printing

The early eighties have seen the birth of a very curious adventure: in parallel, the invention in France and the United States of the Additive Layer Manufacturing the acronym of which is ALM. We now measure the singularity of this invention through both (i) the industrial importance taken by the rapid prototyping and by (ii) the growing need for innovation required by economic globalization. But these two items do not tell nothing about the dynamic singularity which resulted in the invention. The purpose of the key-note is to revisit the history of this invention, and to consider the context in which it occurred. It is also to trace the development prospects that can now be designed. Surprisingly, these developments are not so far removed from those that had been imagined in 1984, when the ALM was patented. The history of the invention could be classified in what the Anglo-Saxons call: "innovation case". The spirit of the lecture will be to give a feedback of this history. With regard to innovation the requirements of a paradoxical management, as proposed by SR ... and ALM, will be introduced.

Speakers

Alain Le Méhauté, Scientific Adviser of CEO, Institut Franco Quebecois

Reduced order modeling for design optimization with applications to metal forming and inverse problems

The challenge of Reduced Order Modelling techniques is to provide approximate full-field simulations within delays compatible with the design process requirements. The POD and PGD approaches are particularly interesting when repetitive simulations are required, in optimization and reliability analysis.

In this contribution, we present recent advances in reduced order approaches applied both to physical analysis and to geometry representation.

The overall idea is to reduce one hand the physical field (displacements, stresses, temperatures…) in a non-intrusive manner and to define the reduced space of admissible shapes on another hand. This latter approach consists in representing the structure by means of projection of its level-set surface representation on a set of carefully chosen basis vectors. This allows us to identify the intrinsic dimensionality of the problem, independently of the original design parameters. Also, an optimal parameterization may be obtained automatically for arbitrary shapes, where the parameters are a priori unknown. This allows us to build a family of predictor-corrector optimization “manifold walking” algorithms in a reduced shape-space that guarantee the admissibility of the solution with no additional constraints.

Several applications will be presented such as shape optimization of car engine intake duct, minimizing springback effect in 3D stamping process and identification of material parameters by instrumented indentation.

Speakers

Piotr Breitkopf, Deputy director, Université de Technologie de Compiègne

Introduction to HyperWorks for linear static and non linear quasi static analyses within a project of product development

The suite HyperWorks (HW) was introduced in a course of master degree in Mechanical Engineering. The course titled “Design of Production Processes” has the aim to develop a market-pull product in a set of steps beginning with a perception of a market opportunity and ending in production, sale and delivery activities. HW was used for linear static and non linear quasi static analyses to correctly size the different parts which make up the investigated product. The lessons were organized starting from a general overview on Finite Element Analyses, followed by an introduction to HW interface and, finally, the steps necessary to set-up and to analyze the results of different types of simulation were described. Furthermore, topology optimization of particular sub-components were performed by Inspire.

Speakers

Francesco Gagliardi, University of Calabria

The Team H2politO: vehicles for low consumption competitions using HyperWorks  

The Team H2politO is a group of students of the Politecnico di Torino. The student’s background and profiles are very diverse, everyone comes from a different discipline of engineering and together they compose a complete Team. The disciplines range from Automotive and Mechanical to Electronics, Aerospace, Energy, Mathematics, Computer Science, Mechatronics, Management, Cinema and Media and Industrial Design. The Team mission is to shape a new generation of engineers, leaders in their fields, who represent the educational excellence in regard of each of their competencies.

The results of Team passion and hard work are three low-energy consumption vehicles completely designed and made by the Team:  IDRA - hydrogen powered prototype;  XAM – bioethanol powered parallel hybrid urban concept;  XAM 2.0 –EREV city vehicle.

The main goal is to take part and win in Shell Eco-marathon, a competition that every year involves more than one hundreds of students teams arriving from all over Europe. Especially we would like to spread the Shell Eco-marathon values through ours, combining the sustainable development with a vehicle that uses the least possible amount of energy.

H2politO is a different, innovative and somehow unique project, is not just a Team but something more: it is a new type of conceiving educational, professional and personal growth. Team members aim at being perceived as an experimental laboratory where competences, capabilities and potentialities of future’s engineers are fostered. Students strive to become not only solid and advanced technical experts but, equally important, down-to-earth managers having excellent communication, leadership and teamwork skills.

Practical and hands-on experiences are doubtlessly a complementary and enriching form of educational path where it is very important the use of simulation software like HyperWorks. Team members have a real opportunity to lead their educational path by building and crafting their own thesis. Final papers are indeed part of a cluster of thesis which combines all the technological and organizational areas of development H2politO has envisioned and embraced.

The Team believes in hard work as the basis of future success. Students crave for continuously improving and strive for exceeding expectations by nurturing the team spirit in order to create those synergies able to add value to individual performances and capabilities. As a consequence, passion and team-spirit are really the foundation of H2politO values.

Speakers

Prof. Massimiliana Carello, Politecnico di Milano

Case study of simulation driven designed components in use for a hydrogen-powered prototype vehicle

Motivation
The Hydro2Motion Team is a university project at the faculty 03 (general, car and aircraft engineering) at the University of Applied Sciences Munich. During the last years the students started to get more involved to the topic of Simulation. Developing and manufacturing a car in a very limited amount of time and working in a team of less than ten students, the Hydro2Motion team needed to come up with a process which consumes less time.

At the very beginning simulation in the students project was very little used and if so, just as a validation tool. During the last years the members of Hydro2Motion shifted over to benefit from the simulation and the optimization as a help to find the ideal design for the various parts.

Design process
Topology optimization:
Starting with a model of the available space and the fitting points, software is used to optimize the material distribution under considering loads and constraints. Regarding the optimization result as inspiration the design process is launched. The designer now knows where the forces appear and so the part must be strong and where material can be reduced. For this design approach a manufacturing with 3d additive systems offers an enormous potential.

CFD Chassis variation:
The actual design of the prototype car does not allow the Hydro2Motion team to vary the propulsion system a lot. Further they are limited in the variation of the design of the steering system and the driver´s tallness. By creating a mass model of the driver, the chassis and all relevant components, a basis concept for the design space is constructed. Software allows the young engineers to edit the watertight vehicle body easily. The key is being able to generate the variations fast and without reassembling the model. Then the body gets meshed and analysed in course of a CFD simulation. The post processing offers information about the fluid interactions with the body shells in order to identify regions where further work is needed. By varying the body´s dimensions a better aerodynamic geometry can be found.

Composite optimization:
The development of the new chassis requires an optimized laminate setup to fulfil all requirements. To get in use with the different methods of laminate optimization the students are expanding their skills by setting up small examples. To evaluate how good the examples are converging with the real manufactured parts tests have to be done. These tests contain stability and vibration inspections. After getting more confident with the analysis setup and being secure that the simulation and optimization results are going to satisfy the requirements, during the following months the entire car chassis can be optimized.   

Outlook
The structures and components developed during the past semesters became better and better. Thanks to simulation and optimization tools the designed components can be engineered stronger, stiffer and lighter. Depending on the used material different geometries can be realized. The Hydro2Motion team is planning to concentrate even more on simulation driven design in the future. In course of this specialization, courses and trainings for younger students and engineers are going to be offered, to make sure they can benefit from these powerful tools, too.

Speakers

Daniel Trojer, Basti Henneke, Hochschule München

Formula SAE vehicle

Our third electric Formula SAE car has been designed by our students, thanks to Altair simulation about structural studies. In this way, the software help us building a racing car!

Speakers

Raffaele Martini, Team Leader, Politecnico di Torino

Impact Attenuator Nose Cone Designing for Formula Student Racecar

The topic of my thesis was designing a carbon-fiber-reinforced polymer impact attenuator nose cone for the car of the BME Formula Racing Team competing in 2015. Through my work I had to design the geometry, considering factors such as aerodynamics, manufacturability and the connection between the car and the nose cone. For pre-processing I used HyperMesh, while the most difficult part was the crash simulation in HyperCrash. First I had to make the failure model working, then apply the material models which was based on the material laws measured by the team. Setting and optimizing these parameters in order to achieve a simulation model which represents the real life behavior of composites took an enormous time.

Speakers

Zsombor Sápi, Student, Budapest University of Technology and Economics

Design and development of a chassis for a heavy electrical quadricycle for the urban mobility

Over the last few years, the automotive sector is constantly changing so deeply that engineers are induced to conceive new vehicles that perform at their best the sustainable mobility meaning. In 2050, estimates foresee that in the world there will be nine thousand millions people. They will be concentrated in the urban centers: such a situation up till now, would bring about a strong deterioration of life quality due to a very high traffic congestion and pollution of towns. In this viewpoint, it is necessary to develop vehicles designed exclusively for a sustainable urban mobility whose peculiarities focus above all, on: lightweight, safety, easiness in using and range. So, the heavy quadricycle is beginning to look interesting as the ideal candidate in order to carry out all those tasks. The most widespread models of heavy quadricycles on the market have been weighed through a benchmark analysis. These vehicles main problem is in their passive and active safety equipment. Even though the fatal accidents rates due to quadricycles are so low that they do not require particular type-testing requisites, the European Body for road safety Euro NCAP has already started evaluating the crash performances of the main models on the market, fixing so, the first rating regulations. Fixed the vehicle use target, the chassis design has treated at once the batteries pack positioning with care. The next step has been to determine the vehicle layout by the positioning of the main components in such a way to evaluate the taken up volumes and the masses distribution. This phase has allowed to define the first geometries of cockpit and of the vehicle main load lines. The chassis measuring has treated three chief factors with care: the mass containment, the high torsional and bending stiffness and the basic passive safety requirements. The preliminary project analysis has been validated by a finite elements monodimensional survey to through which it has been possible to choose the cases size and the material used to carry out the chassis. After that it has been designed the chassis by CAD, so that it has been possible to make perfect the vehicle layout and to finish the system integration with the suspensions group, powertrain and body. Then it has been carried out a more in-depth finite elements analysis of chassis in body in white configuration. The main load cases have been determined treating suitable safety coefficients with care in order to evaluate the torsional and bending structure behavior. Moreover it has been evaluated the chassis components tension state under different load conditions and their relevant deformations. It has been carried out also a vehicle modal analysis in order to avoid dangerous resonance situations with the suspensions system. After finishing the static measuring phase, it has been analyzed the chassis crash behavior in BIW. The carried out simulations have been set in accordance with the crash regulations given by Euro NCAP body, as regards the frontal collision for heavy quadricycles, while the same load conditions have been applied to the collision with a pole and the frontal one with vehicles overlap of M1 category. To vouch for the right trade-off between the masses reduction and good requisites of passive safety, some applications of innovative materials such as the aluminium foams have been studied, particularly as regards the batteries pack protection.

Speakers

Alessandro Messana, Student Team H2politO, Politecnico di Torino

Topology Optimization as a technique in multidisciplinary student projects

In cooperation with the Hongik University in Seoul/South Korea and a partner of the automotive industry the chair and institute for engineering design (ikt), RWTH Aachen annually operates the course “Cooperative Product Design”. In this one-semester course a group of German and Korean students has to fulfil the task to develop an e-mobility car concept. Each year a particular task is given by the industrial partner. The student group consists of 10 Korean car design students as well as 10 Korean and 10 German mechanical engineering students. Part of the course is a 10-day-visit of each nationality to both Germany and Seoul. In between the visits the students communicate using web-conference tools and a PDM-System. In 2014 Audi, as the industrial partner, assigned the task of a minimal mobility e-car concept. Since mini mobility concepts tend to have a bad image considering safety, the main focus was to develop a safe and sound body – structure wise and design wise. The way to accomplish that aim was to build a lightweight but stiff cabin. To achieve this goal the students made use of the software Solid Thinking Inspire (Version 9.5). All students were firstly coached about some theoretical background to get a better understanding of how Topology Optimization works numerically and how it can be integrated into the design process. Subsequently they began to work with basic tutorials before referring their design proposals to Solid Thinking Inspire. The presentation will focus on the how the students were able to integrate the software into their project work. Markedly different approaches of design and engineering students could be detected. These results as well as difficulties that occurred during the process will be highlighted. The final optimized structures as well as how they were included into the overall concepts considering software and design will be presented. Eventually it will be discussed how the tool “Topology Optimization” can be successfully integrated into future projects in education.

Speakers

Anna-Lena Beger, Scientific Assistant, RWTH Aachen University

Successful implementation of HyperWorks in the postgraduate studies on CAE basics and applications

Since 8 years Polish constructors have enrolled to post-graduate courses named "Computer Simulations for Engineers", in order to better understand and practice numerical methods, especially the Finite Elements. The presentation describes the structure of this succesful initiative, involving several partners, led by the Dept. of Physics at the Technical University of Gdansk, and DES ART engineering company. Although the Studies are supposed to give a possibly broad perspective, HyperWorks has gradually become the dominating software, recognised by the participants as professional, efficient and versatile. The syllabus includes over 20 courses grouped into 9 blocks. Apart from learning FEA basics, having lectures on case-studies and making short trips into the world of nano-scale or electromagnetics, the students are introduced into most of standard structural HW solvers (OptiStruct Analysis/Optimization, RADIOSS, AcuSolve). Training in HyperMesh is also provided during several hand-ons at varied level of complexity. The presentation illustrates the attractive concept of Creative Projects with examples from recent simulations performed by the participants. Finally, perspectives of evolution are sketched, and some encountered difficulties are discussed.

Speakers

Dr. Marek Augustyniak, R&D Manager, DES ART sp. z o.o.

Topology Optimization Applied to Part Constructed Via FDM (Fused Deposition Modelling) for an Unmanned Aerial Vehicle

Unmanned multi-rotors vehicles are a consolidated reality in the modern aeronautical field. These small helicopters consist in a body “hanged” under a set of fixed pitch propellers each powered by an electric motor. These vehicles have great potentials and the research in this topic is increasing aimed at the reduction of the structure weight, therefore maximizing flight endurance, range and payload.

The development of multi-rotor components represents a key challenge both for the structural optimization and the additive manufacturing; they mainly consist in complex shapes where the most important features are robustness and lightness. These parts are usually produced in small series (i.e. eight parts for a single prototype), are subjected to high loads and need to be able to interface different materials.

The work here presented reports the research conducted in cooperation between Politecnico di Torino and Altair Engineering to design and optimize two vital components for the structure of a multi-rotor. These parts represent a challenge because of the main need is to interface the arms, consisting in carbon fiber tubes, with the electric motor flange, on one side, and the body frame on the other, both made in 7075 Alloy. In particular, the second part will also have an important role as structural shock absorber in case of emergency landing.

The use of topology optimization techniques plays a key role to minimize the weight of the components and to improve the productivity of the machines. Moreover, the fused deposition modeling (FDM) technology, applied in this case, allows producing more parts in less time, improving the cost effectiveness of the project.

An important role is played from the Altair tool used for the preliminary design: Inspire. This tool is conceived to quickly and easily generate structural efficient concepts to obtain lighter designs and to eliminate structural design problems, finally providing input files for 3-D printers.



Speakers

Carlo Ferro, Politecnico di Torino

Driven At Heart – Optimisation And Correlation Of A Morgan

The work presented is based on the geometry of the Aero 8 Supersport architecture, for which a physical chassis was kindly provided by Morgan as a teaching platform for Coventry University. The Aero 8 Supersport body structure is the first aluminium folded sheet metal riv-bonded structure produced by Morgan Motors. The project set by the university aimed at performing an advanced computer model of the chassis for correlation and finally performance optimisation in torsion. Coventry University designed and built a torsional test rig in house. The torsion test procedure was carefully chosen to aid in the following FEM correlation.

Work using Altair HyperMesh, the FE model was built from small model to final full model. The main modelling techniques that aided with correlation were in the adhesive modelling and boundary conditions being true to real life. Difference between CAD and the real life chassis which was tested was investigated to aid improvements in the correlation. Adhesive modelling was carried out with solid Hexa elements produced between matching meshed surfaces on each flange, this made meshing more complex however produced a better result in accuracy and stability.

Overall a good of correlation was achieved between the test and the FE model. The correlation was based on the measurement of dial gauges, strain gauges place in key areas as well as laser tracking of points placed on the outside sill of the chassis along its length. The percentage difference for all these measures over 5 different loading steps found a maximum difference of under 10% between FE and test.

After the correlation process, work to improve the torsional stiffness with minimal mass penalty was carried out. Tight design constraints were enforced therefore only evolutionary methods of optimisation could be explored. A method of topology was conducted where a volume of interest was added to the existing structure as a design volume. This was used to assess areas of additional load paths which could be added to increase the torsional stiffness with minimal mass penalty. Frontal crash pulses were not allowed to be changed during this optimisation therefore efforts for increases in torsional stiffness were in the main tub of the chassis. Mostly the topology was used to test concept designs without finalising the design. Other optimisation method were also used. The final concept design showed increases of around 70% in torsional stiffness for only a 10% mass increase in the total chassis weight. This also kept within the current design window of the rest of the vehicles interior trim and other main components. The structure was assessed mainly through its efficiency determined as torsional stiffness/weight and was increase by 54%. This shows the key weak areas leading to poor torsional stiffness results were assessed and improved upon.

Speakers

Christophe Bastien, Principal Lecturer, Engineering Simulations, Coventry University

Design process with finite elements method simulation

Nowadays, manufacturing industries have to shorten the time to market in order to satisfy needs of customers and to survive in global competitive markets. For these reasons a new type of product data development and management is necessary. The Product Lifecycle Management (PLM) is an emerging philosophy to improve strategic engineering for managing information, processes and resources to support the life cycle of a product, from its conception, development, launch and the withdrawal. The technologies like CAD and CAE are fundamental part of it, although their interactions may be only partially involved. The Finite Elements Method allow today to perform simulations, not only of mechanical components, but also on an entire manufacturing process. This makes it possible to optimize the process parameters and develop new products. The analysis is performed in a virtual environment that allows a significant reduction of the costs related to the experimental tests, necessary to develop a new product or to identify the optimal parameters of a process, in order to obtain components compliant with the technical specifications required. Regarding the sheet metal forming, the data provided by the simulations are related to the stresses and strains of the material and of the molds, to the temperature changes during the process, to the forces of the molding and to the thinning of the sheets. All this information, combined with the criteria of failure/damage and/or with curves of formability of materials, allow to estimate the reliability/robustness of process/product. Currently in CNH are used two of the most important software for the sheet metal forming : Autoform and Hyperform. In order to costs reduction and standardize procedures, it was conducted an activity aimed to a comparative evaluation between the two codes.

Speakers

Martina Maio, Student, Politecnico di Torino

Composite Wood Optimization with OptiStruct, for Revolutionary Bicycle Design

Represented in the architecture of Zaha Hadid, Parametricism has changed the way we design, enabling to achieve curved and complex shapes. In order to realise those designs we often have to invent new materials and construction methods. In recent years composite technologies such as Carbon Fibre Concrete have reached the field of Architecture. We have focused our research over Wood Composites for architectural use. Wood has been basic construction material since ancient times. But it can also be advance composite material as it contains natural fibre structure.

We use wooden sheets together with carbon layers to create Composite Wood Material. By optimizing the fibre direction of each layer of wood and carbon according to the force flow of the structure we can create stronger, more complex and otherwise impossible wooden structures, whilst using less wooden material.

We test this technology over a bicycle design which we develop under the brand name AERO Bicycle.

Authors

Atanas Zhelev, Management and Engineering
Martino Hutz, Concept and Design
Mariya Korolova, Technology Development
Zaha Hadid Studio Wien / AERO Bicycle

Development of an optimization method for woven composite structures

For the automotive industry, the reduction of the mass is a major lever for increasing the energy efficiency of vehicles. Metal solutions and classic cars architectures tend towards an asymptotic state on the mass reduction (using sheets with very high strength, hot-stamped, etc.) and do not break sought on the mass. However, there is a lack of solutions for the replacement of complex parts made of steel or titanium. In order to address this problem, an optimization method where the material and structure can be optimized simultaneously is proposed in COMPANIS-3D project. By using a multi-scale approach and homogenization methods, the method allows us to go from microscopic characteristics of the composite constituents and mesoscopic (tissue architecture) to the macroscopic properties that will be used in the FE calculations. A special feature of proposed method is the integration of the design of fabric composite material into the pre-design phase respecting the constraints of industrial environments. An application on automotive wishbone shown the advantage of this method as supporting decision-making tool.

Authors

Juan Pedro Berro Ramirez, HyperWorks R&D Project Technical Specialist, Altair France

Foam under blast: trials and finite element model

Foam is widely used in energy absorption applications. Its high capacity to deform can dissipate a large amount of energy in a very short time. In recent years, the growth of the sandwich-structure composite with foam reinforcement has created the need to predict and simulate the behavior of different foams under dynamic loads. The use of these foams has now become common in many fields of engineering such as automotive, transports, aeronautics, defense …

In this work, the objective is to present a law calibration method for foam under dynamic impacts. This work required a significant design of experiments (DoE) dedicated to this type of elastoplastic material. The common experimental devices such as Hopkinson bars, shock tube and Taylor air canon must be adapted to identify foam behavior under high velocity load (1 to 50 m/s). We present the results we achieved and what still needs to be done.

It is shown that a quasi-static compression test does not allow to correctly predict the dynamic behavior of such a material. Simulations using the method of Finite Elements (FEM) require an accurate calibration of the material law (law70 and law77 from RADIOSS). Lagrangian and SPH formulations are both tested. We will discuss on what is available in RADIOSS to represent such phenomena and the choices we made.

Authors

Julie FAUST, CEDREM

Topological optimization of a motion controlled crankshaft mechanism

This work deals with the simulation and optimization of a crank drive assembly of a reciprocating piston engine. The research should investigate how the software Altair HyperWorks - with its modules MotionView, HyperMesh, HyperView and the solver OptiStruct – can reduce the development time.Because of the considerable influences of inertia forces for the high speeds of combustion engines in the field of automotive engineering there is an urgent need to reduce the masses of the crank drive parts. Furthermore the industry is faced with short periods of development time. For this reason the objective of this work is to show that the development time can be reduced significantly by using HyperWorks.

With this study, it was possible to recognize the possibilities by using Altair HyperWorks. By means of MotionView the required forces for the FEM calculation and the topological optimization can be determined in short time. The FEM calculation provides an opportunity to see the critical areas, e.g. the piston head or the piston boss area. With these adapted models the topological optimization can be started and the result served to a new shape of the parts. The study has shown that time can be saved considerably by using HyperWorks with its modules. Because of the interaction between the modules the iterative steps by the development progress can be achieved quickly.

Authors

Marcel Herrmann, Cologne University of Applied Sciences

Optimized design for 3D printing

The 3D printing is more and more present in many industrial fields, such as medical, aerospace, automotive, architecture, design and education. This technic presents many advantages like reduced product development costs, customized production and rapid industrial constructive solutions.

Our work aims to encourage students, in mechanical design project, to achieve an optimization study before starting a 3D printing to reduce the costs of their prototypes. Our case study illustrates this pedagogical responsible approach.

We will study the mechanism of a hydraulic clamp systems used in production and mechanical control. The main component, in which the greatest mechanical stresses are concentrated, is printed in 3D before and after an optimization study to establish a comparative analysis.

The optimization study is performed with the Inspire SolidThinking software the component is printed at FabLabW Léonard de Vinci using three different printers exploiting two different printing technic.

Car makers have to reduce consumption of vehicles and so, are continually looking for solutions to lighten components.

For powertrain, components generally mean screwed assembly, contact and fitting interfaces, with different kind of loading to take into account (static and dynamic). Hence, we decided to apply with Altair assistance, a process of topology optimization on an assembly of gearbox housing in order to check its feasibility and efficiency. Several steps had to be solved from exhaustive identification of all mechanical constraints to execution of large models with Optistruct.

By the end, the process has been defined and implemented on an existing gearbox and will be soon apply on the next one to design.

Authors

Bassem Ben Lazreg, De Vinci Technology Lab.

Pedestrian leg injuries and front-end vehicles design

The work aims to investigate the influence of some passenger vehicle front-end design parameters on the behavior and damage occurring in the human lower limbs while impacted in an accident. The analysis is carried out by means of the Lower Limbs Model for Safety (LLMS) for the purpose of pedestrian safety. Considering the pedestrian standardized impact procedure (as in the 2003/12/EC) a design of experiment plan considering various material properties, bumper thickness, position of the higher and lower bumper beams and the position of pedestrian, was performed in order to identify how such vehicles parameters could influence injury occurrence. The injury prediction was derived from knee lateral flexion and lateral shearing, ligaments elongation, stress in bone structure.

The work helps to highlight the most influencing parameters that have to be considered in the optimization of a vehicle front-end to improve its behavior in the impact against a pedestrian by reducing its aggressiveness.

Authors

Scattina A, Avalle M, Chiandussi G, Mechanical and Aerospace Engineering Department, Politecnico di Torino, Torino, Italy

Arnoux P.J, Laboratoire de Biomécanique Appliquée (IFSTTAR), AIX-Marseille Université), Marseille, France

Topological optimization of a children car seat

The evolution of manners to move around in urban areas makes us use several kinds of transportation systems (personal car, bus, train, taxi…). These practices must be taken into account when children travel with their parents and require a specific seat. The objective of the collaborative project called NoMADE, financed by Bpifrance and Région Pays de Loire, led by DOREL (a world class juvenile products company), is to design a new concept of child seat by increasing its degree of mobility and by improving its characteristics such as weight, dimensions and adaptability to different kinds of transportations.

Topological optimization, based on the crash equivalent static load, are included in the first step of the design phase to define the main structural components of the car seat which must satisfy crash test situation. The possible shapes of the components are dependent on the constitutive material and the associated manufacturing constraints.

Firstly, a few test cases were carried out with OptiStruct (software developed by ALTAIR, one of the partners of the NoMADE project) to identify the solver options and the optimization constraints in order to satisfy the manufacturing restrictions. Secondly, an iteration process was conducted to converge towards a solution: the result of the topological optimization was used to define the design space of the next topological optimization.

Finally, the result (corresponding to the element density) was analyzed to submit the first draft of a concept which was validated in crash simulation with RADIOSS.

Authors

Jean-Philippe Bournot, Enseignant-Chercheur ISMANS

Shape optimization of an echography robot

The considered echography robot manipulates an echography probe controlled remotely by an operator. During its operation, the robot is placed on the patient and held by an assistant. Therefore, robot must be light enough to be held without fatigue. Robot architecture is based on a parallel structure with pantographs that has good kinematic properties but that gave a too heavy system. That's why we investigated the shape optimization of the structure to lighten it while maintaining a minimum stiffness for precision of the probe positioning. Shape optimization results obtained with OptiStruct will be presented.

Speakers

Sylvain Miossec, Maître de Conférence, IUT de Bourges, Université d’Orléans

Multiscale structural topology optimization

This work develops firstly a nonlinear framework for concurrent topology optimization of material and structure. It is shown that though linear models are assumed at both scales, the structural equilibrium is nonlinear due to the adaptation of the optimized materials. Secondly, the new regime of nonlinearity due to material optimization is approximated by a precomputed database model. As a result of this off-line step, the effective strain-energy and stress-strain relations required for the concurrent design are provided in a numerically explicit manner, which significantly reduces computational cost.

Authors

Liang XIA, Doctorant, Laboratoire Roberval, UMR 7337 UTC-CNRS, Université de Technologie de Compiègne (UTC)

Optimizing parts for additive manufacturing

Additive manufacturing is mainly used on metallic parts for high value and high tech markets (aerospace, aeronautics and medical sectors). It reduces the time to market and the environmental impact of manufactured parts and enables the realization of complex shapes, sometimes impossible to make with conventional processes. However, common CAD and simulation software are still unable to benefit from the new freedom offered by this process. On the contrary, topological optimisation tools allow the designer to obtain new designs that usually cannot be produced by conventionnal processes. Additive manufacturing is thus a way to materialize topological optimization results and produce parts that meet industrial standards. This will be illustrated by case study on industrial parts, using topological and lattice structure optimization tools.

Authors

Pierre-Thomas Doutre, PhD Student, Poly-Shape / G-SCOP / SIMAP

Innovative electric aircraft propulsion

In the present paper was made the project of innovative electric aircraft propulsion and optimization of its selected geometrical features. The core of the propulsion is the set of counter-rotating propellers in connection with electric motor. The propulsion is designed to work in difficult, unpredictable atmospheric conditions (rescue services, exploration of the atmospheric planets). The main goal of conducted optimization was to reduce the mass of the propulsion unit and aerodynamic drag. The result of the project is a CAD model of the aircraft propulsion designed for the exploratory drone resistant to collisions with edgy obstacles.

Authors

Mateusz Wasik, Engineer, Silesian University of Technology

Laser shock experiments, from research to industry via Radioss numerical simulation

When focusing a high power pulsed laser on absorbing materials, this irradiation results in a high pressure (>GPa), low duration (a few nanoseconds) loading applied to the material. The propagation of this highly dynamic loading can be turned also into tensile loading with controlled intensities, allowing evaluating the dynamic strength of materials or assemblies. Laser shock laboratories facilities exhibit many benefits. They can be coupled with time resolved diagnostics providing experimental data of the shock waves propagation and associated effects (damage, surface treatment, laser shock peening,…). One major advantage is also the easiness of samples recovery for post mortem analysis. Direct comparisons between experiments and simulation with Radioss to evaluate the robustness of numerical modeling are performed, leading to the identification of material constitutive law parameters and damage modeling under extreme strain rate for bulk materials. As an industrial application of laser shock propagation and tensile stress generation into multi-materials assemblies, SIMCHOC uses Radioss to promote the innovative laser adhesion test application to a wide range of stuck assemblies.

Authors

D. ZAGOURI, M. BOUSTIE, FUTUROSCOPE, France

Gradient-based optimization of post-buckled, steered-fiber aircraft sheel using equivalent static loads

Thanks to state-of-the-art manufacturing technics available today, in-plane, steered-fiber paths as opposed to conventional straight-fiber patterns can be manufactured by the likes of Automated Fiber Placement (AFP), among other methods. Continuous fiber angle variation at the ply level producing variable-stiffness laminates can be optimized to improve stiffened panel performances, e.g. pre- & post-buckling stability through optimal bending stiffness distribution. Steered-fiber laminated UAV shell subject to compression caused by wing bending is investigated and optimized. Geometrical nonlinear analysis allowing the aircraft shell to exhibit in the postbuckling regime is considered. The optimal ply thicknesses and orientations leading to minimum weight are obtained through nonlinear response, gradient-based optimization process. The optimization with nonlinear responses is facilitated by Equivalent Static Loads Method (ESLM), in which the original nonlinear response optimization problem is transformed into an iterative procedure of well-established, gradient-based optimization problems dealing with equivalent linear loadcases. Shell’s transverse deformation as well as critical eigen buckling factor are selected as design constraints. Non-convexity nature of the design problem is alleviated by use of design of experiments before the optimization procedure begins. The most attractive feature of this approach is that highly efficient gradient-based optimization is now possible through design sensitivities obtainable from linear analyses; thus limiting the number of expensive nonlinear analyses. Optimal solutions with up to 20% mass reduction is expected. Both the structural improvement offered by variable-stiffness laminates as well as computational performance exhibited by the proposed approach are described and compared to other non-gradient optimization technics. Limitations, important considerations and optimization parameters sensitivities of this particular method when buckling is taken into account are as well underlined.

Authors

Tanut Ungwattanapanit, Scientific collaborator, Institute of Lightweight Structures

COMPRESSOR MACHINE UNITS MODELING

This abstract is devoted to presentation of some compressor engineering problems offered to students in the training and their solutions. Education program realized in The Department Compressor Machines and Units (CMU). The Department was established in 1963. It works as a part of Kazan National Research Technological University (KNRTU). KNRTU is one of the oldest technological universities in Russia. Its history dates back to 1890. The Department includes the computer laboratory. Modern software is available for students and Faculty to carry out calculation, drawing and three-dimensional modeling. HyperWorks developed by ALTAIR is used in Bachelor Degree program "Vacuum and Compressor Engineering of Physical Units" and Master Degree program "Energy-Efficient Compressor Units and Gas-Pumping Units for Gas Processing and Transportation". In 2015 first Bachelors studying HyperWorks graduated.

The Department collaborate with compressor plants and Special Design Bureau for compressor manufacturing, also with the largest energy companies such as «Gazprom» and «Rosneft» in research and advanced training of specialists.

Authors

Ilgizar SAGBIEV, Timur MAKSIMOV, Rustem SHARAFEEV, Kazan National Research Technological University, Russia

Modelling impacts on composite sandwich structures using a semi-continuous strategy

This work focuses on the study of medium velocity impacts on the lower surface of helicopter blades. In a first approach, a blade can be assimilated to composite sandwich panels with a thin woven composite laminate skin (made with two or three plies) stabilized with a polyurethane foam core. These kind of loading is characterized by an impact angle varying from 10° to 20°. The study of impacts on composite sandwich structures is all the more complex that several damage modes - depending on the loading, the geometry and the material properties - can appear.

In a first part, the experimental study is presented. Several impact tests and quasi static tests are performed on a representative sample and on each constitutive material separately in order to identify the major damage mechanisms. A gas gun, a drop tower and tensile and compressive test machines are used. These tests are recorded with high speed cameras at 30000 fps.

In a second part, the developed FE modelling is presented. The modelling is built in the Explicit Finite Element software Radioss. The scale of the modelling is chosen to reproduce the damage mechanisms observed experimentally. Each ply of woven composite fabric is represented by rod elements stabilized with a specific damageable shell element that represent the resin. The woven composite skin are built from these modeled plies by means of specific 8-nodes interply elements developed to connect shell elements. This specific interface is damageable and a bilinear cohesive law is introduced. The foam core is modeled with specific beam elements that represent the edges of the structural cells. The mesh of the core is based on a Voronoi pattern. The size of the cells are varied to find the modeling the most representative with the less elements.

In a third part the ongoing work on this modelling strategy is presented. The material properties differences in the warp and the weft direction for the woven plies are accounted for. More, a unidirectional composite ply element is developed using the same strategy to study the impact on composite laminates made with unidirectional and woven layers.

Authors

Florian Pascal (a), Pablo Navarro (a), Steven Marguet (a), Olivier Dorival (a), Jean-François Ferrero, Université de Toulouse, Institut Clément Ader

Effect of inhomogeneous brain mechanical characteristics on dynamic responses of head under trauma

The purpose of this study was to determine the effect of inhomogeneous characteristic on the dynamic responses of the rat brain tissue under traumatic mechanical loading. A homogeneous and an inhomogeneous rat brain FE model were developed. The linear viscoelastic material properties of rat brain tissue were obtained from recent indentation-relaxation tests. In the inhomogeneous model, the components of the rat brain were reorganized into six groups and defined with different material properties. Three sagittal plane rotational impact tests of the rat brain were selected for the simulation studies. The acceleration with moderate magnitude may result in diffuse axonal injury (DAI) in rat brain, while the acceleration with high magnitude may even result in severe DAI. Intracranial dynamic responses of the inhomogeneous rat brain model were compared with those of the homogeneous model. And the peak values of intracranial dynamic responses of interesting components were extracted for the comparison study. Sustaining the instant rotational acceleration, the calculated Von Mises stress (VMS) of the homogeneous and inhomogeneous rat brain FE models were different both in the distributions and magnitudes. In the homogeneous model, the maximum peak value of VMS was located at cingulate cortex, followed by hippocampus and corpus callosum. In the inhomogeneous model, the maximum peak value of VMS was located at hippocampus, followed by corpus callosum and cingulate cortex. Meanwhile, the peak values of VMS of hippocampus, in the inhomogeneous model, were approximately as twice as the corresponding values in the homogeneous model. On the contrary, the homogeneous and inhomogeneous brain models predicted almost the same first principle strain (FPS) and intracranial pressure (ICP) responses of the rat brain. The contours of the FPS were consistent with the contours of the VMS of the homogeneous model. Clear pressure gradient was observed at the beginning of the simulations, with the maximum peak value of ICP located at olfactory bulbs and the minimum (or the maximum negative) peak value of the ICP located at cerebellum.

Authors

Dr. Daniel Baumgartner, Maitre de conference, Université de Strasbourg

Topology Optimization at the Design Studies of Lightweight Vehicle Structure for L7e Vehicle Class

The modern vehicle development process is driven by many factors. Recently due to the cost competition between the vehicles manufactures and even more restricting emissions normative, some factors like time-to-market and lightweight design dominate the development process.

To increase the efficiency of design process the topology optimization can be applied as a possible solution tool. At the conceptual development stage of new lightweight electric vehicle structure need to be taking into account the placement of electric powertrain components as well as the consideration of static and dynamic (crash) loads. As an example of solution for the electric powered quadricycle (ViF eQuad) the challenges (e.g. lightweight structural design considering the crashworthiness) and the solutions (e.g. single and combined load cases run method to distinguish the influence of each part of material density plot) will be showed. The illustration of force flow paths and their intensity together with the effect of compliance use as the objective function to minimize – high material independency in topology optimization results interpretation will be depicted. Finally percentage of mass reduction for a proposal of the Computer Aided Design concept for further development process will be presented.

Authors

Roman Jedrzejczyk, Researcher VIF Kompetenzzentrum - Das virtuelle Fahrzeug, Forschungsgesellschaft mbH

Some experiences in the didactical use of INSPIRE

Some examples in “CAD Lab” and “Virtual Prototyping “Courses for students of the School of Mechanical Engineering and the School of Design of Politecnico di Milano will be presented.

Speakers

Prof. Umberto Cugini, Politecnico di Milano

Modeling Metamaterial Inclusions Using FEKO for RF and Antenna Applications

This communication presents a new approach for analysing composite artificial material (metamaterials) when associated to antennas using Characteristic Modes Analysis feature (CMA) recently integrated in FEKO. We study split ring resonators (SRRs), which are commonly used to create artificial magnetic mediums in order to enhance antenna performances. A relation- ship between the first eigenmodes and an expression of the polarizability is proposed for a BC-SRR. It thus allows us to describe a link between the artificial magnetic response of a split ring resonator and modal characteristics calculated by FEKO. The simulated results are shown to present good agreement with other analytical and numerical methods. This analysis is useful since it could be performed in the near field region, unlike common approaches based on plane wave and far field assumptions. Furthermore, the advantage of the presented approach is that it deals with structures with arbitrary shapes without the need of considering a particular excitation. This provides a powerful tool for antenna designer to optimise antennas in the field of automotive as well as in aeronautics.

Authors

RABAH M.Hassanein, RABAH LEOST/COSYS-IFSTTAR

EduMotion: An innovative vehicle concept for both research and education

The EduMotion Project is a 4-wheel vehicle concept, driven by pedals in combination with an electric engine similar like an e-bike. With this project, students have the possibility to study and work in research projects in many fields like automotive engineering / electromobility / design / testing / simulation during the entire time of their studies. In addition, the results can be used as demonstrative examples in various lectures.

Specifically, this student research project deals with a topology optimization of the frame of the EduMotion-vehicle in HyperWorks. During this work the creation and determination of the necessary input data is covered. In particular, the creation of the design-space-model and the calculation of the load cases to which the model is optimized will be elaborated. Subsequently the creation of the finite-element-model is described, whereby the meshing of the design-space-model and the modelling of the hang-on parts is covered. Finally the result of the optimization is analyzed and compared to the existing frame. In addition a rough construction draft is created.

Authors

Dominik Geusken, Sven Wallrabe, Prof. Dr.-Ing. Harald Mandel, Prof. Dr. Christian Götz, Dipl.- Gwl. Oliver Fröb, Baden-Wuerttemberg Cooperative State University Stuttgart

Lightweight construction in the Formula Student

With the help of Altair HyperWorks, we were able to successfully reach our goal “Lightweight Construction“ for our new car “egn15“ this season.

For the construction of our gearboxes, we did topology optimizations with Altair OptiStruct illustrating the flux of forces to bring out the last gram of unnecessary weight. Furthermore, we could create additive laser manufactured attachments for our gearboxes.

Above all, with composite optimization using Altair OptiStruct, we were able to establish the best layer structure for our monocoque with carbon fiber reinforced plastic and our Accumulator Container with glass fiber reinforced plastic. “Best layer structure“ means both lightweight and being able to pass the material tests which are required from the Formula Student.

Authors

Thimo Bielsky, Henrik Werner, Technische Universität Hamburg-Harburg, Germany

Greener and Safer Energetic and Ballistic Systems: ERASMUS+ Program for Knowledge Dissemination

The Greener and safer Energetic and Ballistic Systems ERASMUS+ program deals with energetic materials, pyromechanisms and shielding applications for defense and civil applications. It has been proposed by the Militatry Technical Academy of Bucarest, Romania and gathers European universities and engineering schools in UK (Imperial College of London), Portugal (University of Coïmbra) and France (ENSTA Bretagne). It consists of courses and conferences that aim at knowledge dissemination among the European students and researchers about the proposed topic.

In this context the concrete aim of the project will be to provide an Intensive Study Programme for MSc and PhD students coming from four prestigious HEIs across Europe. The proposed program addresses the latest approaches and concepts in the field of greener and safer EBSs, using Information and Communication Technologies (ICT) tools and Open Educational Resources (OER).

Theoretical information are experienced in practice by the students through case studies and demonstrations using the most advanced ICT modeling tools and laboratory. Thus, the project will involve the use of participatory approaches and ICT-based methodologies.

The course teaching activities are followed by conferences, workshops and other multiplier events which will assure a wide dissemination and debate of the topics in academia, research areas, industry and governmental organizations. It gives the chance for all students from partner universities not only to access the contents of the curricula but also to comprehend other educational levels, skills and various cultural backgrounds.

Authors

Thimo Bielsky, Henrik Werner, Technische Universität Hamburg-Harburg, Germany

Lightweight in PX215

Over the last Formula Student season our team members, Marc Möller, Erik Aufderheide, Phillip Jungblut, Sven Meerkötter, and Jan-Patrick Leimbach used the Altair HyperWorks package to analyse and optimize several parts of our race car. As we are all mechanical engineering students at the University of Paderborn, currently striving for a Bachelor or Master of Science degree, we got the chance to participate in different HyperWork trainings to get the results we wished for. For example we used HyperWorks to optimize our CFRP monocoque and drive shafts, our prototyped uprights, the differential mounts, rockers and other parts of the suspension. Over all we were able to reduce the weight of the car significantly, which led to a successful race season. We thank Altair for their support and are looking forward to the next season and a great cooperation.

Authors

Jan-Patrick Leimbach, Dennis Flürenbrock, UPBracingTeam e.V., University of Paderborn

solidThinking Campus Ambassador Program

Antonio Castagna is a Campus Ambassador for Inspire inside his university and beyond. In this poster he presents his activities as an Altair Inspire Ambassador. The main function of the Ambassador, is to bring a useful message to fellow students. The message is much more than just words, the job of an Ambassador is to inform, to convince and to test two products that Altair has on the market, all completely free of charge. Within the university the Ambassador provides students with a free license for one year, under this license the students can freely use of two software tools Inspire and Evolve. After downloading the products the students who come to this world are never left alone in their tasks, in fact, the ambassador acts in this phase as a support figure for the use of the two software tools. The “Ambassador” is a promoter, messenger, teacher, supporter, and helper for the “downloaders” of the software. This is simply great.

Authors

Antonio Castagna, Università della Calabria

Be an Inspire Ambassador - Case Studies

The first case study is a simple example of topology optimization of a beam fixed on the edges and subjected to bending, the second one is similar to the first one but involves a different kind of constraints simplified as bolts. The other three case studies regard the topological optimization of some mechanical structures, such as a robot arm, a helical gear and a DC engine holder. In all the cases the topological optimization is aimed to reduce the weight of the structures preserving the same stiffness of the not optimized structure. These case studies aim to show the potentiality of the software and also intend to be some good point of reference into software learning.

Authors

Sergio Rinaldi, Università della Calabria

Image September 29th - October 1st, 2015
Cité de la Musique,
Paris, France
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