万向铰节点推力关节轴承的力学性能分析

Mechanical performance analysis of thrust spherical plain bearings in universal hinged joint

针对推力关节轴承复合受载情况下的安全性能问题,根据某场馆所采用的万向铰节点结构特点与承载特点,利用有限元法对结构中的推力关节轴承进行了两种不同载荷工况下的力学性能分析。利用大型有限元前处理软件ANSA对三维模型进行了网格划分,再通过ANSA与ANSYS软件的接口,准确建立了万向铰节点结构有限元计算模型,并计算出两种工况下推力关节轴承内、外圈的应力分布规律。研究结果表明,压剪工况下,除盖板外,各部件最大应力均比拉剪工况大;且两种工况下,万向铰节点的最大Von Mises应力值发生的位置一样,均发生在下部轴承外圈内上边缘,因此该部位有可能会是轴承外圈开裂的起始源处。分析结果为万向铰节点推力关节轴承的设计与改进提供了有益的参考。

Aiming at the safety performanc, e of thrust spherical plain bearings under multiple load, finite element method （FEM） was applied to analyze the mechanical performance of thrust spherical plain bearing based on the structure and loading conditions of universal hinged joint used in a venue. The three-dimensional model was meshed using ANSA. Finite elemenl calculation model of universal hinged joint was built up and its stress distribution graph in two working conditions was calculated by interface between ANSA and ANSYS. The results indicate that the maximum stress of every component except cover plate ureter pressing and shear condition is larger than the tension shear eondition. The place which the maximum VonMises stress occurred is the same in two working conditions. Maximum VonMises stress occurs at upper edge of the nether bearing outer ring which is probably the beginning of the crack. The analysis result is summarized and could be useful tbr design and improvement of thrust spherical plain bearing in universal hinged joint.