基于有限元的盘式制动器耦合场研究  

Research on Coupling Field of Disk Brake Based on Finite Element

作　　者：成林[1] 张文明[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《拖拉机与农用运输车》2009年第5期43-45,共3页Tractor & Farm Transporter

基　　金：国家自然科学基金资助项目(50475173)

摘　　要：盘式摩擦制动器在汽车上有着广泛的应用。但该制动器在制动过程中因制动器温度的急剧上升,将使制动性能降低,甚至有可能导致制动器失效,因此制动器温度和应力分布对制动器的寿命及制动性能有着重大影响。本文采用有限元方法对制动器的耦合场进行了分析研究,耦合分析结果表明:在制动开始阶段,制动器迅速升温,高温区集中在制动器摩擦面表层,最高温度达195℃;制动过程结束后,整个制动器有一段较长时间的降温过程;制动器的最大热应力-时间曲线变化规律不一致,但均满足材料强度要求。Friction braking discs are widely used in automobile. During braking, the braking performance becomes worse and worse as the brake temperature rises sharply, which even causes the brake to fail. So the temperature and stress distribution in the brake are very important to the operation life and braking performance of the brake. In this paper, numerical analysis is carried out by the finite element method for the coupling field of the brake. The Coupling analysis results show ： at the beginning of the brake process, the temperature of the brake rises rapidly, the high temperature section concentrates in surface friction layers of the brake, and the top temperature is 195℃ ;there is a long temperature reduction process after the brake process;the trends of the change between maximum heat stress and time curve are different in different parts of the brake ,which, however, satisfy the strength requirement of the material.

关 键 词：盘式制动器 耦合场 有限元 接触 

分 类 号：U463.512[机械工程—车辆工程]