东南大学学报（英文版）2020，Vol.36Issue(1)：24-31,8.DOI:10.3969/j.issn.1003-7985.2020.01.004
圆盘端面旋转摩擦副系统稳定性分析
Stability analysis of the rotating tribological pair system on circular-disc end faces
摘要
Abstract
In order to study the stability of friction and contact of the rotating tribological pair system, considering the influence of the changeable factors on the stability, the system dynamics analysis model based on the Lagrange equation is firstly established. The surface contact stiffness model is determined on the basis of the fractal theory. The model of the friction torque with velocities is created by using the Stribeck friction effect. The Lyapunov indirect method is employed to explore the eigenvalue problem of the system state equation. The effects of the applied load, the fractal dimension, the fractal scaling coefficient and the Stribeck coefficient on the system stability are investigated in detail. The numerical simulation results demonstrate that the tribological pair system is prone to causing system instability at low speed, and the system instability boundary value decreases when the Stribeck coefficient decreases. The fractal dimension and the fractal scaling coefficient impact the system stability slightly when fractal dimensions are large, and the system instability can be reduced by properly increasing the surface smoothness. Moreover, the system instability evidently increases with the increase in the applied load and the Stribeck coefficient. These achievements can provide a reference and theoretical support for the analysis of the dynamic performance of the tribological pair system.关键词
旋转摩擦副系统/接触刚度/Stribeck效应/动力学模型/稳定性Key words
rotating tribological pair system/contact stiffness/Stribeck effect/dynamic model/stability分类
机械制造引用本文复制引用
陈龙,张建润..圆盘端面旋转摩擦副系统稳定性分析[J].东南大学学报（英文版）,2020,36(1):24-31,8.基金项目
The Science and Technology Support Program of Jiangsu Province ( No. BE2014133) , the Transformation Program of Sci-entific and Technological Achievements of Jiangsu Province ( No. 201701213) . （ No. BE2014133）
