关键词: 前保险杠设计；装饰性；翼子板；强度分析；有限元分析

Abstract: Automobile front bumper is an important part of modern automobile structure, which integrates safety and decoration, and the rationality of its design is of great significance to automobile research and development. This paper introduces the composition of the automobile front bumper and the material selection of each component, and also summarizes the matching structural design of the front bumper and peripheral parts such as center grill and fender, in order to provide reference for the subsequent similar structural design. At the same time, according to the cracking or fracture of the front bumper feedback by customers of previous models, the strength of the front bumper based on the external vibration frequency response is analyzed by using the finite element analysis software HyperMesh and Nastran. The analysis results show that under the corresponding frequency, the maximum stress of the front bumper beam and mounting bracket is less than the yield strength of the material, which verifies that the previous bumper design meets the requirements, avoiding the subsequent tooling repair cost of the front bumper due to cracking or fracture of the front bumper.

Key words: Front bumper design; Decoration; Fender; Strength analysis; Finite element analysis