摘要
微动磨损是影响机械关键结构的主要失效形式。为研究磨损形貌和应力场的演化过程及耦合机制,利用ABAQUS软件建立柱面/平面有限元接触模型,并基于Archard磨损公式对微动磨损形貌与接触应力场演化过程进行仿真,进一步对微动磨损过程中磨损形貌和应力场的耦合机制进行分析。仿真结果表明:局部滑移下,磨损形貌呈“W”形,随着循环次数增加,接触宽度和磨损深度略有增加,接触区最大正应力和切应力略有增大;全局滑移下,磨损形貌呈“U”形,随着循环次数增加,磨损形貌显著变宽、变深,接触区正应力和切应力的应力场分布逐渐变宽变扁。
Fretting wear is a main failure form affecting key mechanical structures.In order to study the evolution of wear scar and stress field and their coupling mechanism,a cylinder/plane finite element contact model was established by ABAQUS software,and the evolution process of fretting wear scar and contact stress field was simulated based on Archard wear model.Further,the coupling mechanism of wear scar and stress field during fretting wear was analyzed.The simulation results show that the wear scar is "W"-shaped under partial slip,the contact width and wear depth increase slightly and the maximum contact stress and shear stress increase slightly with the increase of cycle times;under the gross slip,the wear scar is "U"-shaped,with the increase of cycle times,the wear scar becomes wider and deeper significantly,the stress field in the contact zone widens and flattens.
作者
韩怡茗
李欣
刘乐强
杨建伟
HAN Yiming;LI Xin;LIU Leqiang;YANG Jianwei(School of Mechanical-Electronic and Vehicle Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《机床与液压》
北大核心
2024年第19期135-140,共6页
Machine Tool & Hydraulics
基金
国家自然科学基金青年科学基金项目(51905028)
北京市教育委员会科技计划一般项目(KM202110016002)
北京建筑大学金字塔人才培养工程项目(JDYC20200323)。
