角接触球轴承热力学耦合模型与分析方法

接触球轴承运行时，其力学性能与热态特性之间存在高度耦合与交互，轴承热预紧力在这一过程中起着桥梁连接作用。在研究角接触球轴承非线性力学性能与热效应耦合机制的过程中，分析了结合面接触热阻、油气润滑及周边组件换热等边界条件对轴承热态特性的影响，提出了一种角接触球轴承热力学耦合分析方法，并基于多软件协同计算平台建立了轴承热力学耦合模型。在轴承实验平台上，借助热巡检仪，利用轴承套表面开设的测温工艺孔实施了温度实验，对轴承热力学耦合模型的仿真计算结果进行了验证。该模型可用于预测角接触球轴承在不同转速下热预紧力的变化规律，分析比较热预紧力对轴承运行刚度的影响。

Integrated Thermo-mechanical Modeling and Analyzing Angular Contact Ball Bearing

The thermal and mechanical behaviors of running angular contact ball bearings (ACBB) are highly coupled. They are connected by a temperature induced force which is so-called thermal preload. In this paper, an approach to analyzing ACBB thermo-mechanical coupling behaviors is proposed. An integrated ACBB thermo-mechanical model is created based on multi-software collaborative computing platform. Effects of comprehensive thermal boundary conditions like joints thermal contact resistance, oil-air lubrication and the bearing surroundings convection on the ACBB thermal behaviors are investigated by using this integrated model. Temperature tests are performed on the bearing experimentation platform. The analytical model is validated by virtue of temperature inspecting instrument through the temperature-measuring-hole that is fabricated on the bearing housing. Variation principles of ACBB thermal preloads under the different rotational velocities and initial preloads are studied and, effects of thermal preloads on the ACBB operational stiffness are analyzed too.