Application of Finite Element Method to Automobile Safety Evaluation 785101
This paper presents a practical method to predict a quasi-static
barrier load which causes an automobile body structure to
collapse.
The analytical methods proposed so far on such a crushing
problem are generally based on the analytical theory including
nonlinearities in material behavior and geometry. This paper
describes an analytical method using finite element techniques
based on the above-mentioned theory with the contact effect on the
interaction between the body structure and the barrier taken into
consideration. The computer program for the analysis is based upon
the load incremental method.
In order to check the validity of the present method, comparison
between numerical calculations and experiments is made on both
simple models and actual body structures subjected to a crushing
barrier load at the roof and the rear end, separately. On simple
models, the calculations are in good agreement with experiments in
load-deformation characteristics, while on actual body structures
also, fairly good agreement is noted. It was found to be important
that changes in contact surface between the body structure and the
barrier are taken into account in predicting the crushing strength
of the body structure subjected to a barrier load. The method
developed in this paper should serve as a useful tool in automobile
body design.
Author(s):
Ken Kirioka, Kazuhiro Shirasawa, Koji Kurimoto, Tetsuro Tsuchiya
Pages: 13
Event:
17th FISITA Congress (1978), Budapest, Hungary
Related Topics:
Body structures
Vehicle roofs
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