Abstract: Based on the topology optimization method, the optimization design of the floating caliper disc brake caliper body of a passenger car was carried out by using the finite element simulation analysis technology. The optimization design determines the optimal topology structure to meet the requirements of the development of the floating caliper disc brake caliper body of a new passenger car. The optimized design ensures the reliability of the caliper body of the floating caliper disc brake of the passenger car in the use process. The optimization design provides a theoretical basis for the lightweight development of the caliper body of the floating caliper disc brake of passenger cars. The results show that the center deformation of the piston chamber cylinder hole is 0.158 mm, and the maximum tensile stress is 370.2 MPa, which meets the design requirements of deformation and stress.

Key words: Brake caliper body; Topology optimization; Finite element analysis; Structural design; Floating caliper disc; Passenger cars

摘要： 基于拓扑优化方法，利用有限元仿真分析技术对某乘用车浮钳盘式制动器钳体进行了 优化设计，确定了满足某新乘用车浮钳盘式制动器钳体开发所需求的最佳拓扑结构，确保了 乘用车浮钳盘式制动器钳体在使用过程中的可靠性，为乘用车浮钳盘式制动器钳体的轻量化 开发提供了理论依据。结果表明，该优化设计出的乘用车浮钳盘式制动器钳体，其活塞腔缸 孔中心变形量为 0.158 mm，最大拉应力为 370.2 MPa，满足变形量及应力的设计要求。

关键词: 制动器钳体；拓扑优化；有限元分析；结构设计；浮钳盘式；乘用车