摘要
为研究表面周期性粗糙度对接触界面黏滑特性的作用机制,利用有限元方法,建立了滑块-平板接触三维柔性体模型,分析了表面光滑以及单/双表面粗糙条件下的接触黏滑运动过程.结果表明,在速度加载阶段,对于表面光滑工况,系统振动形式表现为初始的单次黏滑振动和后续的持续滑移振动.对于单表面粗糙工况,系统发生了不稳定周期振动,且振动形式表现为循环往复的黏滑振动.对于双表面粗糙工况,受双接触表面复杂的粗糙度影响,系统振动响应表现为往复无序的黏滑振动.适当减小粗糙度幅值和增大粗糙度波长,有利于促进粗糙表面接触.
In order to investigate the mechanism of surface periodic roughness on the stick‑slip characteristics of the contact interface,a three‑dimensional flexible‑body model of the slider‑plate contact was established by using the finite element method,and the contact stick‑slip motion processes under the surface smoothness and single/double surface roughness conditions were analyzed.The results indicated that during the velocity loading phase,the vibration form of the system is characterized by initial single stick‑slip vibration and subsequent sustained slip vibration under the surface smoothness condition.Under the single‑surface roughness condition,the unsteady periodic vibration occurs in the system,and the vibration manifests itself in the form of cyclic stick‑slip vibrations.Under the double‑surface roughness condition,influenced by the complex roughness of double contact surfaces,the vibration response of the system manifests the reciprocating and disorderly stick‑slip vibrations.Appropriate reduction of roughness amplitude and increase of roughness wavelength are beneficial to promote the rough surface contact.
作者
王志强
雷震宇
WANG Zhi-qiang;LEI Zhen-yu(Institute of Rail Transit,Tongji University,Shanghai 201804,China.)
出处
《东北大学学报(自然科学版)》
北大核心
2025年第1期76-82,共7页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(52305123).
关键词
周期性粗糙度
接触界面
黏滑行为
有限元方法
振动响应
periodic roughness
contact interface
stick‑slip behavior
finite element method
vibration response
