期刊
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
卷 48, 期 -, 页码 15-36出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijnonlinmec.2012.07.003
关键词
Clearance joint; Contact; Friction force; Hybrid model; Dynamic characteristics
类别
资金
- National Natural Science Foundation of China [50975056, 11072066]
- Scientific Research Foundation of Harbin Institute of Technology at Weihai [HIT(WH)XB201120]
- Open Foundation of Micro-Spacecraft Technology Key Laboratory
- Fundamental Research Funds for the Central Universities [HIT.NSRIF.2013122]
The contact force model during the contact process of revolute joints with clearance is one of the most important contents. This paper presents a new contact force model of revolute joint with clearance for planar mechanical systems, which is a hybrid model of the Lankarani-Nikravesh model and the improved elastic foundation model. The framework of the Lankarani-Nikravesh model is used with the nonlinear stiffness coefficient derived using the improved elastic foundation model and the damping applied in introducing the ratio of the nonlinear stiffness coefficient of the improved elastic foundation model and contact stiffness of Lankarani-Nikravesh model. Furthermore, the hybrid contact force model is analyzed and compared with Lankarani-Nikravesh model as well as other existing contact models. The tangential contact is represented by using modified Coulomb friction model. And then, the dynamic characteristics of mechanical system with revolute clearance joint are analyzed based on the hybrid contact force model. The correctness and validity of the hybrid contact force model of the revolute joint clearance is verified through the demonstrative application example. Finally, the numerical simulation results show that the presented hybrid contact force model is an effective and new method to predict the dynamic characteristics of planar mechanical systems with clearance in revolute joints. (c) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据