Optimization design of mini car

crashworthiness structure

Deng Zhaoxiang  Hu Yumei  Wang Pan

(State Key Laboratory of Mechanical Transmission, Chongqing Universcity, Chongqing 400044)

Liu Bo  Jiang Wanli  Liu Jingtao

(Technology Center, Chang’an Automotive Stock Company, Chongqing 400023)

Abstract: Mainly concentrated on computer simulation and evaluated the crashworthiness performance according to full size prototype test, the structure optimization technique in mini car crashworthiness design is discussed. By computer simulation and investigating the relationship between the front floor deceleration and the structure of the front end of members, some measurements are actualized on energy absorption structures, and the peak value of the deceleration is decreased to satisfying value. The test shows that the crashworthiness improves dramatically in energy absorption length, quantity, stability, time and proportion, and the damage level of the dummy decreases considerably.

Key words: Frontal impact  Explicit finite element method  Computer simulation  Optimization design

CLC No: U461.91

Received 20040715, received in revised form 20050318