On the safety body structure of finite element method analysis

Sakuria, Toshiaki; Aoki, Toshihiro

Affiliations

¹Passenger Car Engineering Center, Mitsubishi Motors Corporation

Abstract

In developing the safety body structure of a small vehicle, it is necessary to consider both the body structure system and restraint system. In this paper, body structure system is discussed without changing the current characteristics of restraint system. In order to determine the crashworthiness requirements of body structure, the body is divided into two subsystems viz. engine compartment and passenger compartment. Deceleration Ge and Gc are introduced for subsystems, while for total body structure, transfer function Dc is introduced.

Thus, there exists the optimal crashworthiness balance between the engine compartment and passenger compartment.

On the other hand, it is necessary to devise an analytical method to verify the requirements. Various analyses are studied. As a result, it is seen that FEM (Finite Element Method) is useful to predict the crashworthiness. It is also seen that the passenger compartment protection predicted from FEM is verified by testing the prototype vehicle.

Cited Works (1)

Year	Entry
1982	Katoh H, Nakahama R. A study on the ride-down evaluation. In: Proceedings of the 9th International Technical Conference on Experimental Safety Vehicles (ESV). November 1-4, 1982; Kyoto, Japan.190-195.

Cited By (4)

Year	Entry
1998	Mizuno K, Kajzer J. The compatibility of mini cars in traffic accidents. In: Proceedings of the 16th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 31–June 4, 1998; Windsor, Ontario, Canada.715-728.
1991	Wood DP. A general approach to estimating frontal impact collision speeds. In: Proceedings of the 13th International Technical Conference on Experimental Safety Vehicles (ESV). November 4-7, 1991; Paris, France.195-199.
1991	Sakurai T, Takigawa Y, Ikeno H. Study on passenger car rollover simulation. In: Proceedings of the 13th International Technical Conference on Experimental Safety Vehicles (ESV). November 4-7, 1991; Paris, France.747-753.
1992	Wood DP, Mooney S. Car crush, size and safety in frontal collisions. In: Proceedings of the 1992 International IRCOBI Conference on the Biomechanics of Impact. September 9-11, 1992; Verona, Italy.89-103.