Side structure optimization of multipurpose passenger
vehicle based on side collision
1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China; 2. Nanjing IVECO Automobile Co., Ltd., Nanjing, Jiangsu 210028, China
Abstract：To improve the side crash safety performance of multipurpose passenger vehicle, the combination of finite element analysis and real vehicle test was used to optimize the structure. The finite element model of vehicle was established, and the accuracy of the finite element model was verified by comparing the real vehicle frontal crash test with the finite element simulation. The side collision simulation analysis was carried out according to the side impact regulations. By the orthogonal test, five optimization parameters were selected for the inner and outer plates of Bpillar and the door reinforcement plate, and four levels were set respectively to obtain different design schemes. The range analysis method and the multifactor weight optimization method were used to analyze the test results and find the most significant factor level to obtain the optimal design plan. Combined with the side structure characteristics, the door and Bpillar structures were improved to get the final optimization plan. The comparison between the final optimization model and the original model simulation results shows that the intrusion amount and the intrusion speed of the measurement point are significantly reduced, and the effectiveness of the optimization scheme is verified.
