Abstract
According to statistics, in traffic accidents, injuries caused by frontal collisions of passenger cars account for the largest proportion of all traffic accidents, about 40%. Therefore, it is particularly important to improve the frontal collision of passenger cars. Therefore, this article uses the ANSYS/LSDYNA module to model the passenger car with finite element analysis and analyze the frontal rigid wall collision at a speed of 50km/h. According to the frontal collision process of the passenger car, the characteristics of deformation, energy absorption, and dummy posture during the collision process are studied. Through the extracted animation and curve results, the collision characteristics of the passenger car are analyzed. After optimizing the energy-absorbing box, through the analysis of the research results, the following conclusions are drawn. 5 layers of the energy-absorbing layer part of the energy-absorbing box give the best results, and the energy absorption capacity of the energy-absorbing box has reached twice the original structure. The impact resistance of the passenger car is greatly improved, the personnel in the cockpit are safer, and the vehicle is less likely to be damaged.
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