Abstract:

Recent developments in modeling of clearance joints and dynamics of mechanical systems with clearances are reviewed. Different modeling approaches for clearance joints are summarized firstly, which comprise the massless link approach, the non-smooth dynamics approach, the contact force approach and the 3D revolute joint approach. Then, applications of these approaches in the study of the nonlinear dynamics, and performance and reliability evaluation of the mechanical systems with clearances are systematically reviewed. Finally, the key problems and priorities which need to be further studied are proposed, including the modeling of clearace joints considering stick-slip phenomenon, contact surface profile and conformal contact condition, the dynamic analysis and kinematic accuracy evaluation of mechanical systems with both clearances and uncertainties, and the design for clearance joints.

Key words: clearance joint, impact, friction, dynamics, performance evaluation

摘要：

基于近年来计及间隙影响的运动副建模以及含间隙机械系统动力学的研究, 综述间隙运动副连续接触模型、经典碰撞模型、连续接触力模型以及旋转副三维间隙模型等的研究进展, 介绍间隙模型在机械系统动力学非线性特性分析、性能评价与可靠性评估等方面的应用情况, 详细探讨考虑黏滞–滑动过程和接触表面形貌的间隙建模、共形接触建模、不确定参数的含间隙系统动力学分析、运动精度评估以及运动副间隙设计等未来应重点研究的若干关键技术问题。

关键词: 间隙运动副, 碰撞, 摩擦, 动力学, 性能评价