| 粗糙表面热弹塑性接触问题的无网格法 |
| |
| 引用本文： | 刘天祥,刘更,谢琴,佟瑞庭.粗糙表面热弹塑性接触问题的无网格法[J].机械工程学报,2009,45(1). |
| |
| 作者姓名： | 刘天祥 刘更 谢琴 佟瑞庭 |
| |
| 作者单位： | 西北工业大学机电学院,西安,710072 |
| |
| 基金项目： | 国家自然科学基金，西北工业大学基础研究基金 |
| |
| 摘 要： | 建立可考虑屈服应力温度相关的粗糙表面热弹塑性接触无网格法数值计算模型.研究摩擦力和不同热输入情况下圆柱体与弹塑性平面的接触力学特性,探讨摩擦热效应对表面温升、接触压力和接触面积的影响.结果表明在考虑剪切摩擦力作用后,弹塑性接触压力分布不再关于接触区域中轴线对称而出现了"塌陷"现象.通过无网格法解与有限元法解比较发现不恰当的有限元网格划分会造成接触压力的数值震荡,而无网格法可避免这一现象的发生.发现忽略温度相关效应将高估最大接触压力而低估相应外载荷下产生的接触面积.
|
| 关 键 词： | 热弹塑性 接触 粗糙表面 温度相关 无网格法 |
Mesh-free Method for Thermal Elasto-plastic Contact of Rough Surfaces |
| |
| LIU Tianxiang,LIU Geng,XIE Qin,TONG Ruiting.Mesh-free Method for Thermal Elasto-plastic Contact of Rough Surfaces[J].Chinese Journal of Mechanical Engineering,2009,45(1). |
| |
| Authors: | LIU Tianxiang LIU Geng XIE Qin TONG Ruiting |
| |
| Affiliation: | School of Mechatronic Engineering;Northwestern Polytechnical University;Xi'an 710072 |
| |
| Abstract: | A thermal elasto-plastic contact model which can consider the effects of temperature-dependent yield strength is developed to investigate the influences of the steady-state frictional heating on the contact performance of surface asperities and subsurface stress fields between two contacting bodies.The model is verified through the contact analysis of a rigid,isolated cylinder with a thermal elasto-plastic plane.The results show that the contact pressures of elasto-plastic contact with considering the frict... |
| |
| Keywords: | Thermal elasto-plastic Contact Rough surfaces Temperature-dependent Mesh-free Method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
