高速湿式离合器摩擦片表面微织构优化设计  

Optimization Design of Micro-texture on the Surface of Friction Plate in High-Speed Wet Clutch

作　　者：张琳 蒙华[1] 冯宇 赵晓龙 魏超 严运兵[1] Zhang Lin;Meng Hua;Feng Yu;Zhao Xiaolong;Wei Chao;Yan Yunbing(School of Automotive and Traffic Engineering,Wuhan University of Science and Technology,Wuhan 430081;Zhejiang University,State Key Laboratory of Fluid Power and Mechatronic Systems,Hangzhou 310027;National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology,Baotou 014030;Beijing Institute of Technology,Science and Technology on Vehicle Transmission Laboratory,Beijing 100081)

机构地区：[1]武汉科技大学汽车与交通工程学院,武汉430081 [2]浙江大学,流体动力基础件与机电系统国家重点实验室,杭州310027 [3]特种车辆设计制造集成技术全国重点实验室,包头014030 [4]北京理工大学,坦克传动国防科技重点实验室,北京100081

出　　处：《汽车工程》2024年第2期320-328,共9页Automotive Engineering

基　　金：湖北省自然科学基金项目(2023AFB084);流体动力基础件与机电系统国家重点实验室开放基金课题(GZKF-202318);特种车辆设计制造集成技术全国重点实验室开放课题(GZ2023KF004);教育部“春晖计划”合作科研项目(HZ⁃KY20220330);湖北省教育厅科学研究计划指导项目(B2022027)资助。

摘　　要：湿式离合器是车辆传动系统核心元件,在高速分离状态下易出现摩擦片和钢片之间的碰撞摩擦,由此引起离合器带排转矩的急剧增大,影响其传动效率和可靠性。因此,本文以降低离合器高速段碰摩带排转矩为目标,对摩擦片表面微织构进行了优化设计。首先提出了摩擦片表面任意微织构形线参数化建模方法;然后选取了微织构的数量、深度、周向占比、径向占比和形线参数,构建了微织构优化的设计变量、约束条件和优化目标函数,通过将试验设计、模拟近似模型和搜索寻优相结合,建立了摩擦片表面微织构优化设计模型;最后进行了微织构优化前后的带排转矩对比试验。结果表明优化后的微织构可显著降低高速段碰摩带排转矩,并大幅推迟摩擦副高速碰摩现象出现的线速度。The wet clutch is the core component of the vehicle transmission system.It is prone to rub-im⁃pact between the friction plate and steel plate during high-speed separation,resulting in a sharp increase in drag torque,and affecting its transmission efficiency and reliability.Therefore,in this paper,to reduce the rub-impact drag torque in high-speed wet clutch,the micro-texture on the surface of the friction plate is optimally designed.Firstly,a parameterized modeling method of arbitrary micro-texture shape lines on the surface of friction plate is pro⁃posed.Then the number,depth,circumferential proportion,radial proportion and shape line parameters of the mi⁃cro-texture are selected to construct the design variables,constraint conditions and optimal objective function for mi⁃cro-texture optimization.By combining the experiment design method,approximation modeling simulation and glob⁃al search optimization method,an optimal design model of micro-texture on the surface of friction plate is estab⁃lished.Finally,a comparison test of drag torque before and after micro-texture optimization is carried out.The re⁃sults show that the optimized micro-texture can significantly reduce the rub-impact drag torque at high circumferen⁃tial speed,and greatly delay the critical speed at which the rub-impact phenomenon of friction pair occurs.

关 键 词：湿式离合器 流固耦合 碰撞摩擦 带排转矩 优化设计 

分 类 号：U463.2[机械工程—车辆工程]