Optimization Design of Inner Structure and Material of Cars Front Bumper Based on Finite Element Method

摘要

The ideal design of the bumper should take full advantage of the bumper plastic deformation to absorb most crash energy in automobile collisions. In the paper, the bumpers with different inner structure (circular cross section form and honeycomb cross section), different materials (Al alloy, structural steel and polyethylene) have been researched by finite element method. The simulation of the bumper deformation in the collision process through simulation calculation has been obtained. The collision resistance of the bumper has been evaluated, and the cross section shape and material parameters have been optimized. When the simulation method used for the enterprise design bumper, the design cycle, test times and costs saving can be reduced effectively.