摘要
为预测滚动轴承疲劳寿命,根据轴承裂纹扩展方式建立了修正临界平面,将裂纹由二维扩展转化为三维扩展。将Smith-Watson-Topper-疲劳指标参数(SWT-FIP)法与应力-疲劳寿命(S-N)曲线相结合,基于修正临界平面法和修正Paris模型,以等效椭圆裂纹面积差为疲劳裂纹扩展表征量,计算等效裂纹长度,建立了涵盖裂纹萌生寿命、裂纹扩展寿命和疲劳剥落寿命的滚动轴承全周期疲劳寿命预测模型。利用两种轴承加速寿命试验数据集对全周期疲劳寿命预测模型进行验证,并与L-P模型和原Paris模型进行对比分析,结果表明:相较于原Paris模型和L-P模型,所建立的滚动轴承全周期疲劳寿命预测模型能够更准确地预测轴承疲劳寿命。
In order to predict the fatigue life of rolling bearings,a modified critical plane was established according to the bearing crack extension mode,which transformed the cracks from two-dimensional extension to three-dimensional extension.Combining the Smith-Watson-Topper-fatigue indicator parameter(SWT-FIP)method with S-N curve,based on the modified critical plane method and the modified Paris model,the equivalent elliptical crack area difference was used as fatigue crack extension characterization quantity,and the equivalent crack length was calculated to establish a full-cycle fatigue life prediction model of the rolling bearings covering crack initiation life,crack extension life and fatigue spalling life.The full-cycle fatigue life prediction model was validated with 2 types of accelerated life test datasets of bearings,and compared with L-P model and original Paris model.Results show that the full-cycle fatigue life prediction model of rolling bearings may predict the fatigue life of bearings more accurate than that of original Paris model and L-P model.
作者
杨慧明
杨霞
黄宇齐
YANG Huiming;YANG Xia;HUANG Yuqi(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan,030024;Shanxi Xinghuacun Fenjiu Group Co.,Ltd.,Fenyang,Shanxi,032205)
出处
《中国机械工程》
北大核心
2025年第9期2003-2010,共8页
China Mechanical Engineering
基金
国家自然科学基金(52175354)
山西省基础研究计划(20210302123211)。
作者简介
杨慧明,男,1996年生,硕士研究生。研究方向为滚动轴承寿命预测。E-mail:974504118@qq.com;通信作者:杨霞,女,1981年生,教授、硕士研究生导师。研究方向为动轴承运行行为及接触边界元法。E-mail:xiay06@163.com。
