家用车制动盘的多目标优化设计

Multi-Objective Optimization Design of a Vehicle Brake Disc

针对某家用车制动盘的结构改进问题,本文对家用车制动盘进行多目标优化。为避免优化的盲目性,提高设计效率,首先对建立的制动盘有限元模型进行灵敏度分析,得出制动盘各尺寸参数对制动性能的影响度。以制动盘表面温度最低与最大等效应力值最小作为目标函数,建立优化数学模型,采用Ansys Workbench中的多目标遗传算法进行求解,优化后进行仿真验证。优化结果表明,优化后最高温度降低了13.1%,最大应力降低了11.5%,既节省了优化时间又改进了制动盘的结构,实现了制动盘的多目标优化设计。该研究为盘式制动器设计提供了参考。

Aiming at the structural improvement of the brake disc of a family car,this paper carries out multi-objective optimization for the brake disc of family car.In order to avoid the blindness of optimization and improve the design efficiency,the sensitivity of the finite element model of the brake disc was firstly analyzed,and the influence degree of each dimension parameter of the brake disc on the braking performance was obtained.Taking the minimum surface temperature of the brake disc and the minimum maximum equivalent stress value as the objective function,the optimization mathematical model was established,and the multi-objective genetic algorithm in Ansys Workbench was used to solve it.After optimization,simulation verification was carried out,and the optimal design of the brake disc was realized.The optimization results show that the maximum temperature is reduced by 13.1%and the maximum stress is reduced by 11.5%,which not only saves the optimization time,but also realizes the structural improvement of the brake disc,and realizes the multi-objective optimization design of the brake disc.The research provides reference for disc brake design.