湿式离合器摩擦副摩滑过程的摩擦转矩失稳研究

离合器总成技术是我国新制定的节能汽车关键技术路线图中列出的重要关键技术之一。离合器工作品质不稳定和早期烧蚀一直是困扰各类自动变速器性能提高的瓶颈问题之一。离合器摩滑过程中，热机耦合变形导致的非均匀接触摩擦与副间流体粘性摩擦效应叠加，导致摩擦副输出的综合转矩呈现出失稳状态。本课题通过综合考虑离合器薄板摩擦元件热机耦合翘曲失稳效应与粗糙界面流体粘性摩擦效应，形成薄板摩擦副受限条件下的界面等效分析模型与验证系统，将界面摩擦行为及特性与受限条件下的真实系统动力学特性相结合，量化表达薄板摩擦副微观行为与离合器宏观摩擦转矩之间的映射关系，抑制和调控摩擦转矩的失稳状态，为准确操控离合器和提高离合器工作品质提供支撑。

The clutch assembly technology is one of the key technologies listed in the technology route map of the development of Chinese new energy vehicles.One of the bottlenecks in the improvement of various types of automatic transmission is the unstable working quality and early ablation.The non-uniform contact caused by thermo mechanical coupling deformation and the viscous friction between the pairs lead to unstable torque in the process of friction.The project combines warping instability effect of clutch friction element and viscous friction effect of rough interface.At last, the interface equivalent analysis model and the verification system under the condition of thin plate friction pair will be established.It combines the friction behavior and characteristics of the interface with the real dynamic characteristics.It quantifies the relationship between the micro behavior of the friction pairs and the macroscopic friction torque.By controlling the instability of the friction torque, the clutch can be controlled accurately and the working quality of clutch can be improved.