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This paper focus on creating simplified models for plate-like automotive parts which can be used for crashworthiness analysis. Other than the traditional ways that used shell elements with coarse meshing to model plate-like parts for a simplified vehicle model, this paper tried to use superelement and equivalent beam methods to re-model such parts. In this paper, both methods are presented separately and two simplified chassis models are generated applying the two methods. The efficiency of the developed simplified models as well as the presented modeling methods are evaluated and compared through crashworthiness analyses, and finally positive results are achieved.

In this paper, a new beam element is developed for the purpose of capturing thin-walled beam’s collapse mechanisms under dynamic load such as impact load and will be validated in the next phase. Such beam element can be used to create simplified finite element models for crashworthiness analysis and simulation and, therefore, will significantly reduce the modeling effort and computing time. The developed beam element will be implemented into LS-DYNA and validated through crashworthiness analysis and simulation. This paper introduces the approach of deriving the new element formulation.