离合器摩擦副微观粗糙表面滑动接触特性研究  

Study on the Sliding Contact Characteristics of Micro-rough Surface of Clutch Friction Pair

作　　者：董玮 魏成思 郑长松[3] 王茜 李超[3] DONG Wei;WEI Chengsi;ZHENG Changsong;WANG Qian;LI Chao(Army Armament Department information support office,Beijing 100072,China;Beijing North Vehicle Group Corporation,Beijing 100072,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Key Laboratory of Modern Measurement&Control Technology in Ministry of Education,Beijing Information Science&Technology University,Beijing 100192,China)

机构地区：[1]陆军装备部信息保障室,北京100072 [2]北京北方车辆集团有限公司,北京100072 [3]北京理工大学机械与车辆学院,北京100081 [4]北京信息科技大学现代测控技术教育部重点实验室,北京100192

出　　处：《车辆与动力技术》2024年第3期7-11,30,共6页Vehicle & Power Technology

摘　　要：考虑离合器摩擦元件实际形貌特征,建立了摩擦表面微凸体二维挤压和滑动接触有限元模型,研究了摩擦表面的微观接触特性.摩擦表面间的接触实际为微凸体的相互挤压,随着施加载荷的增加,摩擦表面接触微凸体的个数逐渐增加,实际接触微凸体数量的变化影响单个微凸体的承受载荷.摩擦表面之间的滑动接触实际上是微凸体的相对挤压和剪切,并且致使微凸体顶部产生弹塑性变形的过程.本研究为摩擦元件的摩擦磨损机理研究提供了理论基础.Considering the actual morphology characteristics of the clutch friction component,a 2D extrusion and sliding contact finite element model of friction surface micro-asperities was established to study the microscopic contact characteristics of the friction surface.The contact between friction surfaces is actually the mutual extrusion of micro-asperities.With the increase of applied load,the number of micro-asperities in contact with the friction surface gradually increases,and the change in the actual number of micro-asperities affects the load bearing capacity by a single micro-asperity.The sliding contact between friction surfaces is actually the process of relative extrusion and mutual shearing of micro-asperities,thus leading to the elastic-plastic deformation at the top of the micro-asperity.This study provides a theoretical basis for the research of friction and wear mechanisms of friction components.

关 键 词：离合器 摩擦元件 微凸体 接触特性 

分 类 号：U463.2[机械工程—车辆工程]