湿式摩擦离合器摩擦片的热力耦合分析  

Thermo- mechanical Coupling Analysis of Friction Plate of Wet Friction Clutch

作　　者：杨勇强[1] 李小莹[1] 曹博涛[1] 张春侠[1] 张曼[1] 

机构地区：[1]陕西科技大学机电工程学院,陕西西安710021

出　　处：《机械传动》2016年第1期153-156,共4页Journal of Mechanical Transmission

基　　金：陕西省教育厅科研计划项目(2013JK1042)

摘　　要：在湿式摩擦离合器动力学研究的基础上,采用摩擦功率法对离合器接合过程的热流密度进行了计算。并讨论了摩擦片的对流换热问题,运用有限元技术建立摩擦片模型,对其温度场和应力场耦合情况进行了分析。研究结果表明,摩擦片径向温度随着半径逐渐增大,厚度方向温度升高主要位于摩擦片表面区域。摩擦片外圈区域出现周向拉应力,内圈区域为周向压应力;而摩擦表面出现径向压应力,摩擦片内部出现径向拉应力。该结论为摩擦离合器热失效分析提供了一定的理论基础。Based on the dynamics research of wet friction clutch,the engagement heat flux of friction clutch is calculated by friction power method,and the heat convection of wet friction clutch is discussed. The model of friction plate is established by using the finite element method,and the temperature field and the stress field of its are analyzed. The results of thermo- mechanical coupling field show the radial temperature of friction plate increase with the increase of radius,the thickness direction temperature is close to the surface region of friction plate. The circumferential tensile stress appears in the region close to the outer edge,while the circumferential pressure stress appears in the region close to the inner edge. The radial pressure stress is in the friction surface,and the radial tensile stress is in inner region of friction plate. The result provides the theoretical foundation for the thermal failure analysis of friction clutch.

关 键 词：摩擦离合器 摩擦片 有限元 热力耦合分析 

分 类 号：TH133.4[机械工程—机械制造及自动化]