类金刚石膜-磨粒滑动接触过程的有限元分析  

Simulation of Sliding Contact of Abrasive Particle on Diamond-Like Carbon Film Surface

作　　者：曾群锋[1] 于飞[1] 

机构地区：[1]西安交通大学现代设计及转子轴承系统教育部重点实验室,西安710049

出　　处：《真空科学与技术学报》2014年第1期79-83,共5页Chinese Journal of Vacuum Science and Technology

基　　金：国家基础研究973项目(2009CB724206);教育部博士点基金(20120201120040)资助课题

摘　　要：采用ANSYS有限元软件模拟了磨粒磨损中类金刚石(DLC)膜与磨粒在旋转滑动中的接触过程,分析了DLC膜表层在整个接触过程中的应力应变和接触压力的变化规律,研究了滑动接触次数对DLC膜残余应变的影响。结果表明:DLC膜在滑动接触后其表层存在着明显的残余应力;DLC膜的变形主要为塑性变形,且随着滑动接触次数的增加逐渐增大;DLC膜的非线性和摩擦接触的非线性共同影响着滑动接触过程中薄膜中应力应变的变化。DLC膜与磨粒滑动接触过程的研究将有助于研究DLC膜的表面磨损机制。The rotational sliding contact of the abrasive particles on the surfaces of the diamond-like carbon （DLC） thin films was physically modeled, properly approximated, and numerically simulated in finite element method with soft- ware package ANSYS.The influence of the contact pressure on the stress and strain distributions in the DLC films,and the impact of the times of the sliding contact on the residual strain were evaluated. The simulated results show that the sliding contact left behind the observable residual stress and plastic deformation on the DLC films. The fairly localized, non-uni- form sliding contact on the surfaces of DLC films and the non-linear nature of the frictional forces all have a major impact on the stress and strain distributions. The residual stress in the DLC films was found to gradually increase with an increas- ing number of the contact times.

关 键 词：类金刚石膜 磨粒 滑动接触 应力应变 有限元分析 

分 类 号：TH117.1[机械工程—机械设计及理论]