高性能滚动轴承-螺旋锥齿轮系统是重大装备的典型关键基础件和关键系统，建立尽可能符合实际的系统动力学模型和动力学分析成为亟待解决的关键问题。齿轮系统振动分析中滚动轴承和啮合齿面的等效结合部力学模型，已不能满足复杂工况下高性能滚动轴承-螺旋锥齿轮系统的精确动力学分析要求。项目运用多体动力学方法、有限元方法和润滑摩擦理论，通过有限元柔性体建模方法和四边形面网格方法研究，建立滚动轴承和螺旋锥齿轮的真实结构柔性多体接触动力学模型和包围盒快速搜索算法。揭示高性能滚动轴承和螺旋锥齿轮的多柔性体、多界面动态润滑摩擦机理和动态接触碰撞行为及其对系统的动力学性能和运行稳定性的影响规律。运用多体有限元方法和广义-α算法，建立高性能滚动轴承-螺旋锥齿轮系统的柔性多体接触动力学分析模型，计算模拟极端和复杂工况下齿轮系统的动态性能、稳定性和振动响应，提出高性能滚动轴承-螺旋锥齿轮系统的柔性多体接触动力学分析的新方法。

The high-performance rolling bearings-spiral bevel gear systems are typically key basic parts and key systems of key equipment. Currently, the exact dynamics models and dynamics analysis are the urgent and key questions of the actual spiral bevel gear systems. The rolling bearings and meshing teeth are usually equivalent to the combination surface models of vibration analysis models in gear systems. Actually, it's difficult to simulate multibody dynamics analysis of high-performance rolling bearings-spiral bevel gear systems by the lumped parameter method. The method of finite element flexible body and the method of quadrilateral patch mesh are proposed in this project on basis of multibody dynamics, finite element method and contact dynamics. The flexible multibody contact dynamics models of rolling bearings and spiral bevel gear transmission with the real structure of components and parts. The bounding box algorithm is programmed for fast searching for dynamic contact. The mechanism and essence are revealed for dynamic lubrication, friction, contact and impact between multi-flexible bodies and multi interface of high-performance rolling bearings and spiral bevel gear transmission. The influence and rule are discussed on dynamic performance and operation stability. The flexible multibody contact dynamics models of high-performance rolling bearings-spiral bevel gear systems by multibody finite element method. The dynamic performance, stability and vibration response are simulated by generalized alpha algorithm under extreme and complex conditions. The new method of flexible multibody contact dynamics analysis on high-performance rolling bearings-spiral bevel gear systems.