新型传动滚筒疲劳寿命分析  

Fatigue Life Analysis of a New Type of Driving Drum

作　　者：于玉真 王飞 李文玉 王凯良 

机构地区：[1]华北理工大学机械工程学院,河北唐山063009

出　　处：《机械传动》2017年第4期72-76,共5页Journal of Mechanical Transmission

基　　金：河北省科技计划项目(13211918);华北理工大学研究生教改重点项目(20161125)

摘　　要：在ANSYS中对新型传动滚筒进行瞬态动力学分析,得到多种工况下该传动滚筒的最大等效应力云图、最大主应力时间历程。应用n Code Glyph Works的雨流分析模块对传动滚筒时间历程曲线进行雨流计数,并对载荷谱外推和叠加。基于疲劳寿命预测的相关理论,采用Stress Life模块分析其疲劳寿命和疲劳敏感性,得到传动滚筒损伤直方图以及在过载和残余应力影响下传动滚筒最小疲劳寿命曲线图。研究结果表明,该传动滚筒力学性能良好,传动滚筒的最小疲劳寿命约为783天,满足使用要求。过载和残余应力均对传动滚筒的疲劳寿命具有明显影响。The transient dynamics analysis of the new driving drum is carried out by using ANSYS, its maximum equivalent stress cloud pictures and maximum principal stress time history in different work conditions are obtained. The rain - flow counting, the load extrapolation and superposition of the maximum equivalent stress time history of the dangerous area of the driving drum are carried out by using Rainflow module in nCode GlyphWorks. Based on the relative theory of fatigue life prediction, stress life module is used to analyze the fa- tigue life and fatigue sensitivity of the driving drum. The damage histogram of the driving drum and the mini- mum fatigue life curves of the driving drum under the different inputted parameters are obtained. The results show that the driving drum has a good mechanical property, the minimum fatigue life of the driving drum is about 783 days to meet use requirements. The overload and residual stress have obvious influence on the fatigue life of the driving drum.

关 键 词：传动滚筒 载荷谱 疲劳寿命 疲劳敏感性 

分 类 号：TH222[机械工程—机械制造及自动化]