汽车工程 ›› 2024, Vol. 46 ›› Issue (2): 320-328.doi: 10.19562/j.chinasae.qcgc.2024.02.014

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高速湿式离合器摩擦片表面微织构优化设计

张琳1,2,3,蒙华1,冯宇3,赵晓龙3,魏超4(),严运兵1   

  1. 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
  • 收稿日期:2023-07-06 修回日期:2023-08-14 出版日期:2024-02-25 发布日期:2024-02-23
  • 通讯作者: 魏超 E-mail:BIT_weichao@163.com
  • 基金资助:
    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(HZKY20220330);湖北省教育厅科学研究计划指导项目(B2022027)

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

Lin Zhang1,2,3,Hua Meng1,Yu Feng3,Xiaolong Zhao3,Chao Wei4(),Yunbing Yan1   

  1. 1.School of Automotive and Traffic Engineering,Wuhan University of Science and Technology,Wuhan  430081
    2.Zhejiang University,State Key Laboratory of Fluid Power and Mechatronic Systems,Hangzhou  310027
    3.National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology,Baotou  014030
    4.Beijing Institute of Technology,Science and Technology on Vehicle Transmission Laboratory,Beijing  100081
  • Received:2023-07-06 Revised:2023-08-14 Online:2024-02-25 Published:2024-02-23
  • Contact: Chao Wei E-mail:BIT_weichao@163.com

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。

关键词: 湿式离合器, 流固耦合, 碰撞摩擦, 带排转矩, 优化设计

Abstract:

The wet clutch is the core component of the vehicle transmission system. It is prone to rub-impact 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 proposed. Then the number, depth, circumferential proportion, radial proportion and shape line parameters of the micro-texture are selected to construct the design variables, constraint conditions and optimal objective function for micro-texture optimization. By combining the experiment design method, approximation modeling simulation and global search optimization method, an optimal design model of micro-texture on the surface of friction plate is established. Finally, a comparison test of drag torque before and after micro-texture optimization is carried out. The results show that the optimized micro-texture can significantly reduce the rub-impact drag torque at high circumferential speed, and greatly delay the critical speed at which the rub-impact phenomenon of friction pair occurs.

Key words: wet clutch, fluid-structure interaction, rub-impact, drag torque, optimization design