关键词: 制动盘；模态分析；响应面法；轻量化

Abstract: In order to obtain a lightweight passenger car brake disc structure that meets modal separation requirements, and also provide a theoretical basis for the modal optimization design and development of passenger car brake discs. Taking a passenger car brake disc as the research object, a modal finite element simulation analysis model of a passenger car brake disc is created. Taking the structural parameters of a passenger car brake disc as the design variables for modal optimization of the brake disc, an experimental design is conducted using the method of extensible lattice sequence. The kriging method is used to create a modal response surface analysis model for a passenger car brake disc, and then the genetic algorithm method is used to optimize the modal response surface analysis model for a passenger car brake disc. The results show that the brake disc obtained based on the response surface optimization method for a passenger car meets the modal separation requirements. The brake disc after optimization is 8.114 8 kg, the original mass before optimization is 9.739 kg. After optimization, it has been reduced by about 16.68%, with a significant lightweight effect.

Key words: Brake disc; Modal analysis; Response surface method; Light weight