摘要
基于二维柱面-平面模型的有限元接触分析,发现接触状态由部分滑移转变为整体滑移的临界应变载荷幅值与法向力近似成正比。采用Archard模型以及多层节点更新方法,利用有限元二次开发数值模拟锆合金的微动磨损。发现锆合金的磨损速率随应变载荷幅值增加而增加,在部分滑移状态下增长缓慢,在整体滑移状态下快速增长。在整体滑移状态下,磨损速率随法向力增加先增加后减小;在部分滑移状态下,磨损速率随法向力增加缓慢减小。
The finite element contact analysis on two-dimensional cylinder-flat models was conducted. The results indicate that the critical amplitude of strain load transforming partial slip condition into gross slip condition is approximately proportional to the normal force. The fretting wear of zircaloy was simulated by secondary development of finite element based on Archard model and multilayer nodes update method. It is discovered that the wear rate of zircaloy increases rapidly under gross slip condition and increases slowly under partial slip condition with the increase of amplitude of strain load. The wear rate firstly increases and then decreases as the normal force under gross slip condition increases. Under partial slip condition, the wear rate decreases slowly with the increase of normal force.
出处
《工程力学》
EI
CSCD
北大核心
2016年第B06期275-282,共8页
Engineering Mechanics
基金
国家自然科学基金项目(11272092)
上海市科技人才计划项目(14R21421500)
