Modeling of joints with clearance in flexible multibody systems
Modeling of joints with clearance in flexible multibody systems
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DOI：
10.1016/s0020-7683(01)00186-x
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发表时间：
2001
影响因子：
3.6
通讯作者：
O. Bauchau;Jesus Rodriguez
中科院分区：
文献类型：
--
作者：
O. Bauchau;Jesus Rodriguez
本文在基于有限元的非线性柔性多体系统动力学分析框架内，研究了含间隙关节的建模问题。对于实际的关节，间隙、润滑和摩擦现象会显著影响系统的动态响应。在这项工作中，研究了间隙和润滑对回转联接和球面联接的影响。该公式是在能量守恒和衰减时间积分格式的框架内发展的，该格式为非线性、灵活的多体系统提供无条件稳定性。数值算例表明了该方法的有效性和准确性。讨论了建立结构阻尼和有限驱动功率模型的重要性。
This paper is concerned with the modeling of joints with clearance within the framework of finite element based dynamic analysis of nonlinear, flexible multibody systems. For actual joints, clearance, lubrication and friction phenomena can significantly affect the dynamic response of the system. In this work, the effects of clearance and lubrication are studied for revolute and spherical joints. The formulation is developed within the framework of energy preserving and decaying time integration schemes that provide unconditional stability for nonlinear, flexible multibody systems. Numerical examples are presented that demonstrate the efficiency and accuracy of the proposed approach. The importance of modeling structural damping and limited driving power are discussed.