中国机械工程2024，Vol.35Issue(8)：1358-1365,8.DOI:10.3969/j.issn.1004-132X.2024.08.003
采油单螺杆泵动态力学特性及疲劳寿命预测研究
Study on Dynamic Mechanics Characteristics and Fatigue Life Prediction of Single PCPs
摘要
Abstract
Aiming at the rubber fatigue failures of the stator of conventional production PCPs,the fatigue test of stator rubber material under 50 ℃ oil immersion condition was carried out with GLB120-27 type single PCP as the research object,the fatigue performance parameters of rubber ma-terial were obtained,and the fatigue life prediction model was established.The dynamic mechanics characteristics of PCPs were analyzed by finite element method with ABAQUS software.Based on the stress-strain response results obtained by numerical simulation and the stress-strain fitting expression of stator rubber materials in uniaxial tensile tests,the range of strain energy release rate at fatigue danger points was calculated.The fatigue life prediction of PCPs under different interference condi-tions was studied by using the established fatigue life prediction model.The results show that the fa-tigue life decreases exponentially with the increase of interference.Compared with the average work-ing life of a single PCP in recent 5 years,based on crack propagation method the fatigue life of the sta-tor rubber may meet the requirements of engineering prediction accuracy.关键词
螺杆泵/动态力学特性/定子橡胶/疲劳寿命预测Key words
progressing cavity pump(PCP)/dynamic mechanics characteristic/stator rubber/fa-tigue life prediction分类
机械制造引用本文复制引用
祖海英,孙金山,叶卫东,李大奇..采油单螺杆泵动态力学特性及疲劳寿命预测研究[J].中国机械工程,2024,35(8):1358-1365,8.基金项目
国家自然科学基金(52374383) （52374383）
