The New Terminology to Develop and Evaluate IIHS Barrier Model Using Shell Elements

The IIHS (Insurance Institute for Highway Safety) deformable barrier is used by test houses to perform side impact tests and represents the front end geometry of a typical SUV or pickup car. The barrier was developed by Cellbond in 2000-2001 in conjunction with the institute. The MDB impactor consists of two differently configured aluminium honeycomb blocks partially covered by aluminium skins. Altair and Cellbond have investigated this barrier to create and verify a new Finite Element model for RADIOSS users. To maintain the time-step and time efficiency of the model, the cell sizes have been enlarged at honeycomb blocks while quasi-static and dynamic components test results are used to establish the characteristics and verify the preliminary proposal prior to the application in the full-scale IIHS model. The material properties for the adhesive parts are also identified by a number of experimental tests. The model is finally subjected to a series of full-size boundary conditions and evaluated against the physical test data. The Final comparisons show accurate numerical correlation between CAE outcome and test results and the crash patterns in the FE analysis are close to the corresponding at the experiments.

The Author

M. Asadi, Cellbond
S. Abdennadher, Altair Development (France)
F. Njilie, Altair Development (France)

<< Back