基于性能优化的汽车制动盘热-机耦合应力分析

Thermal-Mechanical Coupling Thermal Stress of Automobile Brake Disc Based on Performance Optimization

汽车盘式制动器的制动力特性是一个热力学耦合过程,热-机耦合的动力学过程直接影响着制动器在使用过程中出现的振动、噪声过大和热疲劳损坏的频率。因此,对其进行热-机耦合动力学分析是制动器设计与机械加工的关键。在设计盘式制动器三维模型的基础上,利用直接耦合分析方法对其进行热-机耦合应力分析,并建立有限元模型,对盘式制动器进行温度场和热应力场模拟仿真分析,为盘式制动器的设计优化和加工工艺改进提供参考依据。

The braking force characteristic of vehicle disc brakes is a thermodynamically coupled process,and the dynamic process of thermal-mechanical coupling directly affects the frequency of vibration,excessive noise and thermal fatigue damage of the brake during use.Therefore,the dynamic analysis of thermal-mechanical coupling is the key to brake design and machining.In this study,a three-dimensional model of the disc brake was drawn,and the thermal-mechanical coupled stress analysis was carried out by using the direct coupling analysis method,and a finite element model was established to simulate and analyze the temperature field and thermal stress field of the disc brake,it will provide reference for design optimization and processing technology improvement.