压力容器2024，Vol.41Issue(4)：53-59,7.DOI:10.3969/j.issn.1001-4837.2024.04.007
内压轴向位移载荷作用下波纹管多轴疲劳寿命预测
Prediction of multiaxial fatigue life of bellows under internal pressure and axial displacement load
摘要
Abstract
In this study,the bellows for a project was chosen as the research object to investigate the multiaxial fatigue life of the bellows under combined loading conditions of internal pressure and axial displacement using a newly proposed Modified Smith-Watson-Topper(MSWT)critical plane model.Due to the occurrence of plastic deformation at the peaks and valleys of the bellows under low-cycle displacement loads,a new damage parameter,DP,composed of plastic strain amplitude and maximum normal stress,was formulated.The critical plane,where the maximum DP value occurs,was defined as the plane where fatigue failure takes place.Numerical simulations of the bellows were conducted using the Abaqus software.Based on the results of the numerical analysis,the MSWT model predicts fatigue life of bellows under different operating conditions to be 3388 cycles and 6059 cycles,which shows good agreement with experimental results.This provides a certain reference for the design and development of bellows.关键词
金属波纹管/疲劳寿命/临界面法/有限元法Key words
metal bellows/fatigue life/critical plane method/FEM分类
机械制造引用本文复制引用
马园园,张建明,苏天一,苑庆迪,宋忠良,李想..内压轴向位移载荷作用下波纹管多轴疲劳寿命预测[J].压力容器,2024,41(4):53-59,7.基金项目
辽宁省教育厅高校基本科研项目"复杂载荷下管道用金属波纹管膨胀节疲劳可靠性及优化设计"(JYTMS20231095) （JYTMS20231095）
