鼓式制动器热—结构耦合特性仿真分析  

Thermal-structure coupling characteristic simulation analysis for drum brake

作　　者：郑彬 张敬东 殷国富[2] Zheng Bin;Zhang Jingdong;Yin Guofu(School of Transportation and Automobile Engineering,Panzhihua University,Panzhihua,617000,China;School of Manu facturing Science and Engineering,Sichuan University,Chengdu,610065,China)

机构地区：[1]攀枝花学院交通与汽车工程学院,四川攀枝花617000 [2]四川大学制造科学与工程学院,成都市610065

出　　处：《中国农机化学报》2019年第2期119-124,共6页Journal of Chinese Agricultural Mechanization

基　　金：四川省教育厅2018年度自然科学重点项目(18ZA0293);攀枝花学院博士科研启动项目(bkqj2017006);攀枝花学院校级培育项目(2017ZD007)

摘　　要：以鼓式制动器作为研究对象,制动鼓受到摩擦衬片和制动蹄长期挤压会产生热载荷,对制动性能造成影响,从而影响行车安全。在制动过程中,温度场和应力场的变化规律会对制动性能造成很大影响,因此温度场和应力场的耦合分析计算是制动器设计不可或缺的内容。采用SolidWorks软件对鼓式制动器的制动鼓、摩擦衬片、制动蹄进行三维建模并导入至ANSYS中,对制动过程进行热—结构耦合分析。研究制动过程中制动鼓摩擦表面的温度场分布以此为载荷进行结构分析,得出制动器的最大变形为0.28mm,出现在制动蹄顶端附近;制动蹄的最大应力为222.85MPa,出现在制动蹄中部回位弹簧孔区域。仿真分析结果表明在制动过程中,制动器满足工程要求,为制动器的结构设计提供一种新思路。Taking a drum brake as the research object,considering that after a long time driving,the drum is subjected to the friction lining and brake shoe long-term squeeze would produce thermal load,which would affect the braking performance of automobiles,thus affecting the safety of vehicle traffic.During the process of braking,the temperature field and stress field change law will also have a great impact on braking performance,temperature field and stress field coupling analysis and calculation of brake design is an indispensable content.First,three-dimensional modeling of drum brake drums,friction linings,and brake shoes are established by using SolidWorks software and then imported to the ANSYS software.Then,lhe thermal-structure coupling nnalysis of braking process is carried out.The temperature field distribution on the friction surface of brake drum during braking process is studied and the structure analysis is carried out based on the results.The maximum deformation of the brake is 0.28 mm near the top of the brake shoe.The maximum equivalent stress of the brake shoe is 222.85 MPa near the middle of the return spring hole.Analysis results show that the brake drum meets the requirement of engineering in the braking process and provides a new idea for the structural design of the brake.

关 键 词：鼓式制动器 热-结构耦合 仿真分析 

分 类 号：U463.51[机械工程—车辆工程]