Fatigue Life Prediction of Rolling Bearings Based on Modified SWT Mean Stress Correction
Fatigue Life Prediction of Rolling Bearings Based on Modified SWT Mean Stress Correction作者机构：School of Mechanical and Electrical EngineeringUniversity of Electronic Science and Technology of ChinaChengdu611731China Center for System Reliability and SafetyUniversity of Electronic Science and Technology of ChinaChengdu611731China
出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)
年 卷 期：2021年第34卷第6期
页 面：240-251页
核心收录：
学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
主 题：Rolling bearings Fatigue life prediction Modified SWT model Mean stress correction
摘 要：The existing engineering empirical life analysis models are not capable of considering the constitutive behavior of materials under contact loads;as a consequence,these methods may not be accurate to predict fatigue lives of roll-ing *** addition,the contact stress of bearing in operation is cyclically pulsating,it also means that the bear-ing undergo non-symmetrical fatigue *** the mean stress has great effects on fatigue life,in this work,a novel fatigue life prediction model based on the modified SWT mean stress correction is proposed as a basis of which to estimate the fatigue life of rolling bearings,in which,takes sensitivity of materials and mean stress into account.A compensation factor is introduced to overcome the inaccurate predictions resulted from the Smith,Watson,and Topper(SWT)model that considers the mean stress effect and sensitivity while assuming the sensitivity coefficient of all materials to be ***,the validation of the model is finalized by several practical experimental data and the comparison to the conventional SWT *** results show the better performance of the proposed model,especially in the accuracy than the existing SWT *** research will shed light on a new direction for predicting the fatigue life of rolling bearings.
维普期刊数据库
同方期刊数据库