构件疲劳破坏的数值模拟分析  

Simulation analysis of fatigue failure

作　　者：徐尚龙[1] 薛河[1] 王晓丽[1] 

机构地区：[1]西安科技学院,陕西西安710054

出　　处：《煤矿机械》2003年第5期29-31,共3页Coal Mine Machinery

基　　金：陕西省教育厅专项科研基金资助项目 ( 0 1JK2 17)

摘　　要：简单介绍了基于有限元分析结果进行疲劳寿命估算的基本理论和思路 ,运用ANSYS程序对一典型构件进行有限元数值模拟 ,得到应力强度因子 ,并进行了疲劳寿命估算。得出不同裂纹长度的应力强度因子幅值、裂纹扩展率和疲劳寿命。分析结果与用解析法的计算结果基本相近 ,同时体现了有限元法在构件疲劳寿命评估和“损伤容限”The fatigue life estimation is briefly outlined from finite element analysis results in this paper.Numerical simulation of a typical structure is carried out by ANSYS program and the stress intensity factor is obtained.The life of fatigue crack is estimated and the result is approximate to that by estimation formulas,which is the proof of advantage and reliability of finite element method in fatigue life prediction and damage limit design field.

关 键 词：构件疲劳破坏 数值模拟分析 有限元法 煤矿机械 静强度 

分 类 号：TD407[矿业工程—矿山机电]