矿用车辆湿式多盘制动器热流固耦合特性研究  

Analysis of Thermal Fluid Structure Coupling Temperature Field and Stress Field of Wet Multi Disc Brake

作　　者：张传伟[1] 赵大卫 刘劲鹏 ZHANG Chuanwei;ZHAO Dawei;LIU Jinpeng(School of Mechanical Engineering,Xi’an University of Science and Technology,Shaanxi Xi’an 710054,China)

机构地区：[1]西安科技大学机械工程学院,陕西西安710054

出　　处：《机械设计与制造》2025年第3期152-158,共7页Machinery Design & Manufacture

基　　金：国家自然科学基金(51974229);陕西省科技厅科技计划项目企业联合基金(2019JLP-06);陕西省创新能力支撑计划(2021TD-27)。

摘　　要：针对湿式制动器在制动时温度急剧上升,导致翘曲变形、热失效等不良现象,建立湿式多盘制动器热流固耦合有限元模型,分析湿式制动器在紧急制动工况下动摩擦盘温度和应力在周向及径向上的分布规律。结果表明:在制动过程中动摩擦盘上出现了较大温度梯度,最高温度出现在中径处呈现环状分布,等效应力的分布与温度分布保持一致。径向路径上温度和应力呈现“低高低”山峰状,周向路径上温度和应力呈现振荡分布。研究结果可为湿式多盘制动器的设计提供理论基础。Aiming at the rapid increase in temperature of wet brakes during braking,resulting in warping deformation,thermal failure and other undesirable phenomena,a thermal-fluid-solid coupling finite element model of wet multi-disc brakes was established to analyze the temperature and stress of the dynamic friction discs of wet brakes under emergency braking conditions.Distribution law in the circumferential and radial directions.The results show that a large temperature gradient appears on the dynamic friction disc during braking,the highest temperature appears in a ring-shaped distribution at the middle diameter,and the distribution of equivalent stress is consistent with the temperature distribution.The temperature and stress on the radial path present a"low-high-low"peak shape,and on the circumferential path,the temperature and stress present an oscillating distribution.The research results can provide a theoretical basis for the design of wet multi-disc brakes.

关 键 词：湿式多盘制动器 热流固耦合 温度场 应力场 

分 类 号：TH16[机械工程—机械制造及自动化] TD525[矿业工程—矿山机电]