Kinematics accuracy and dynamic analysis of multi-body systems with spatial cylindrical clearance joints

被引：0
|
作者：
Liu T. [1 ]
Qian L. [1 ]
Yin Q. [1 ]
机构：
[1] School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2017年 / 36卷 / 19期
关键词：
Contact mode; Joint clearance; Multi-body system; Potential contact point; Spatial cylindrical joint;
D O I：
10.13465/j.cnki.jvs.2017.19.023
中图分类号：
学科分类号：
摘要：
In order to investigate the influence of spatial cylindrical joints with clearances on system performances, all possible contact modes of a typical spatial cylindrical clearance joint were analyzed. Aiming at the spatial cylindrical joints with clearances in the axial and radial directions, the geometry and kinematics of complicated contact modes were analyzed. An improved method for computing potential contact points was proposed. The normal contact impact force model and the tangential friction force model were set up. Then, the multi-body dynamic equation was given with consideration of the normal contact impact force and the tangential friction force. Finally, a spatial double pendulum with joint clearance was taken as an example and the results were compared with those by using the ideal model. The results show that the kinematic accuracy and dynamic performance of the system were affected greatly, because of the existing clearances in the axial and radial directions, and different clearance sizes can change the kinematic accuracy of the system. The method and the results provide a theoretical basis for the design and improvement of the mechanical structures. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：151 / 157
页数：6
相关论文
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