滑动磨损过程有限元分析及销磨损预测  

Simulation of Sliding Wear Based on Finite Element Method and Its Application to Wear Prediction of Link Pivot Joint

作　　者：宿月文[1] 陈渭[1] 朱爱斌[1] 谢友柏[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：《中国机械工程》2009年第13期1573-1576,1581,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50805115);高等学校博士学科点专项科研基金资助项目(20050698016)

摘　　要：应用有限元理论和数值仿真方法,建立了滑动磨损过程预测模型,并采用ANSYS软件开发了通用程序。引入磨损步长的概念和移动接触边界节点的方法来描述材料的去除过程,利用结构优化算法中的边界位移法解决了边界节点变动导致的内部网格畸变问题;然后通过方块-圆环磨损试验证明了上述方法的可靠性;最后,应用该方法对某起吊设备的销连接副接触磨损进行了分析与预测,其误差约为12%。结果表明,应用有限元方法从宏观接触的角度对磨损过程进行预测,可大大提高计算效率,为工程磨损设计提供了现实可用的工具。A sliding wear simulation approach based on Archard＇s wear law was proposed, in which the progressive accumulation of wear in metal pin was simulated with ANSYS software. Removal of material caused by wear was implemented by moving boundary nodes. Possible mesh distortion due to repositioning boundary nodes was settled using boundary displacement method from structural shape optimization. Through discretizing wear process into wear simulation step, total wear volume was calculated using Euler integration scheme. Two block--on--ring experiments were performed to validate above wear prediction method. Then wear problem of pin pivot joint in lifting system was analyzed and predicted with error of 12%. Results show that the complex nonlinear wear process can be simulated with a series of discrete quasi static models based on FEM, and the method proposed can be as an available tool to predict wear problems for engineering.

关 键 词：滑动磨损 磨损建模 有限元方法 仿真 

分 类 号：TH117.1[机械工程—机械设计及理论]