湿式多片离合器是坦克装甲车辆综合传动系统的关键部件之一，极端工况下，润滑油非牛顿特性、温升和表面粗糙度的作用相互叠加，导致摩擦界面动压润滑失效发生。由动压润滑失效所造成的湿式多片离合器高温损伤失效问题，已成为制约我国新型坦克装甲车辆功率密度提高和可靠性增强的瓶颈。本项目在前期研究的基础上，综合考虑润滑油非牛顿特性、温升和表面粗糙度的影响，建立湿式多片离合器摩擦界面动压润滑失效形成及演变机理分析模型和实验系统，揭示湿式多片离合器摩擦界面动压润滑失效的形成及演变机理，阐明润滑油非牛顿特性、温升和表面粗糙度在动压润滑失效中的作用机制，获取多工况参数对湿式多片离合器动压润滑失效形成及演变的影响规律，建立有效的湿式多片离合器动压润滑失效预测和抑制方法，为湿式多片离合器结构参数优化和控制策略改进提供理论与技术支撑，具有重要的科学意义与应用价值。

Wet multi-disc clutch is one of the key components of the integrated transmission system of tanks and other armored vehicles. Under extreme conditions, the effects of lubricant non-Newtonian characteristics, temperature rise, and surface roughness superimpose each other, resulting in the failure of hydrodynamic lubrication at the friction interface. The high temperature wet multi-disc clutch failure caused by the failure of hydrodynamic lubrication has become a bottleneck restricting the power density increasing and reliability improvement of our new tanks and other armored vehicles. In this project, the effects of lubricant non-Newtonian characteristics, temperature rise, and surface roughness are considered comprehensively, and the hydrodynamic lubrication failure formation and evolution mechanism analysis model and experimental system for the wet multi-disc clutch are established based on previous research. The purpose is to reveal the failure formation and evolution mechanism of hydrodynamic lubrication at the friction interface of wet multi-disc clutch, to clarify the action mechanism of lubricant non-Newtonian characteristics, temperature rise and surface roughness in the failure of hydrodynamic lubrication, to obtain the influence law of multiple working conditions parameters on the hydrodynamic lubrication failure formation and evolution of wet multi-disc clutch, and to establish effective methods to predict and restrain the failure of hydrodynamic lubrication of wet multi-disc clutch, which can provide theoretical and technical support for structural parameter optimization and control strategy improvement of wet multi-disc clutch. This project has important scientific significance and application value.