基于Paris模型的滚动轴承全周期疲劳寿命预测

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中图分类号：TH133DOI：10.3969/j.issn.1004-132X.2025.09.012 开放科学（资源服务）标识码（OSID）：

Full-cycleFatigueLife Prediction ofRollingBearingsBased on Paris Modeling

YANG Huiming1² YANG Xia" HUANG Yuqi1 1.School of Mechanical Engineering，Taiyuan University of Science and Technology，Taiyuan，030024 2.Shanxi Xinghuacun Fenjiu Group Co.，Ltd.，Fenyang，Shanxi，032205

Abstract：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 spaling life.The full-cycle fatigue life prediction model was validated with 2 types of accelerated life test datasets of bearings，and compared with L-Pmodel 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.

Key words： roling bearing；modified critical plane；modified Paris model; full cycle fatigue life pre diction

0 引言

滚动轴承作为旋转机械的关键零部件之一，在动力传递和支撑上起着不可替代的作用[1-2]。（剩余13373字）