汽车鼓式制动器热力耦合有限元仿真分析  

Finite element simulation analysis of thermo-mechanical coupling for automotive drum brake

作　　者：毕世英[1] 刘伟达 郭丽君 BI Shi-ying;LIU Wei-da;GUO Li-jun(School of Mechanical,Electrical and Vehicle Engineering, Weifang University,Weifang 261061,China;Weichai Power Co.,Ltd.,Weifang 261061,China)

机构地区：[1]潍坊学院机电与车辆工程学院,山东潍坊261061 [2]潍柴动力股份有限公司,山东潍坊261061

出　　处：《机电工程》2019年第10期1110-1114,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(61863019);陆地交通气象灾害防治技术国家工程实验室开放研究基金资助项目(NELJA201605);潍坊市科技发展计划资助项目(2018GX018,2018GX003)

摘　　要：针对大坡度路段装载有鼓式制动器的重型载重汽车下坡时事故频发的问题,对某后桥单驱动鼓式制动器在制动过程中的温度和应力变化进行了研究。使用了有限元分析方法,对汽车鼓式制动器的制动鼓、制动蹄和摩擦衬片进行了热分析求解和结构分析,将温度场运算结果附加到模型之中,并求解了制动器结构的应力分布,对其进行了热力耦合分析;使用ANSYS workbench建立了鼓式制动器热力耦合有限元模型,通过制动摩擦生热模拟仿真试验对热力耦合作用进行了15次分析。研究结果表明:制动鼓、制动蹄及摩擦片的升温变化明显,通过监测确定了热衰退临界温度临界点。Aiming at the problem of frequent accidents of heavy-duty trucks loaded with drum brakes on downhill sections, the temperature and stress changes during the braking process of the rear axle single-drive drum brake were studied. The finite element analysis method was used for the brake drum, brake shoe and friction lining of the automobile drum brake for thermal analysis and structural analysis. The temperature field calculation results were added to the model, and the stress distribution of the brake structure was solved, and the thermal coupling analysis was performed. The thermal coupling finite element model of the drum brake was established using ANSYS workbench. The thermal coupling effect was analyzed 15 times by the brake friction heat generation simulation test. The results indicate that the temperature rise of brake drum, brake shoe and friction plate is obvious, and the critical point of thermal decay critical temperature is determined by monitoring.

关 键 词：后鼓式制动器 ANSYS BENCH 有限元分析 制动鼓 摩擦接触 

分 类 号：U463.511[机械工程—车辆工程] TP391.9[交通运输工程—载运工具运用工程]