关键词: 挡泥板支架；失效改进；模态分析；道路载荷谱响应分析

Abstract: Aiming at the failure of commercial vehicle fender support products due to manufacturing defects in the development process, a computer aided engineering (CAE) simulation and bench comparison verification process based on measured road spectrum data is proposed. First, determine the failure mode; Secondly, determine the process defect of the failure part; The process is improved again, and the sample before and after the improvement is simulated by CAE and compared with the bench; Finally, the inspection standard of the product is formulated, and the follow-up use and tracking shows that the improvement effect is good. The research shows that this verification process can make an accurate and effective improvement plan for the failure of fender support products, and provide a process reference for the development of similar cantilever beam structure products in the future.

Key words: Fender support; Failure improvement; Modal analysis; Analysis of road load spectrum response