Dynamics of spatial flexible multibody systems with clearance and lubricated spherical joints |
| |
Authors: | Qiang Tian Yunqing Zhang Liping Chen Paulo Flores |
| |
Affiliation: | 1. Center for Computer-Aided Design, School of Mechanical Science and Engineering, Huazhong University of Science and Technology Wuhan, Hubei 430074, PR China;2. Department of Mechanical Engineering, University of Minho, Campus de Azurem, 4800-058 Guimarães, Portugal |
| |
Abstract: | A computational methodology for analysis of spatial flexible multibody systems, considering the effects of the clearances and lubrication in the system spherical joints, is presented. The dry contact forces are evaluated through a Hertzian-based contact law, which includes a damping term representing the energy dissipation. The frictional forces are evaluated using a modified Coulomb’s friction law. In the case of lubricated joints, the resulting lubricant forces are derived from the corresponding Reynolds’ equation. An absolute nodal formulation is utilized in flexible body formulation. The generalized-α method is used to solve the resulting equations of motion. The effectiveness of the methodology is demonstrated by two numerical examples. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|