基于ANSYS有限元的微动疲劳接触特征分析  

Contract Characteristic of Fretting Fatigue Based on ANSYS Finite Element

作　　者：孙明俊[1] 刘玉金[1] 

机构地区：[1]河南理工大学万方科技学院,焦作454003

出　　处：《重庆科技学院学报（自然科学版）》2009年第5期148-151,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

摘　　要：接触压力是影响构件微动疲劳寿命的关键因素之一。微动疲劳实验中,桥式微动装置可以合理控制接触压力,以便分析接触压力对构件疲劳寿命的影响规律。基于数值分析法,建立桥式微动装置的有限元模型来研究接触特征;考虑微动桥自身弯曲的影响,分析了接触副上节点的应力应变分布规律,提出了特征接触区域的判断方法。Contact pressure is one of key factors which affect the fretting fatigue life of mechanical components.To analyze the relationship between contact pressure and fretting fatigue life,contact pressure can be adjusted expediently by bridge-typed fretting tester in fretting fatigue experiment.Base on numerical method,a model used is built to study the contact characteristics of the tester.Considering the influence of the tester’ bending,stress and strain distribution is obtained,and a determination method is proposed to investigate the contact characteristics in contact zone between bridge-typed fretting pads and specimen.

关 键 词：微动疲劳 数值分析 接触区域 接触压力 

分 类 号：TH123[机械工程—机械设计及理论]