基于威布尔分布与贝叶斯推断的轮毂轴承疲劳寿命预测

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中图分类号：U463.341 文献标识码：A 文章编号：1003-8639（2026）02-0107-03

WheelHubBearingFatigueLife PredictionBased onWeibull Distribution and Bayesian Inference

LiMei,Li Yu (Department of Basic Studies,Zhengzhou University of Science and Technology,Zhengzhou 45oo64, China)

【Abstract】 As a key safety component for carying and transmitting torque in the automobile chassis system, the service reliabilityof whelhubbearings is directly relatedto thedriving safetyof the whole vehicleand the whole lifecycle maintenance cost.In engineering practice,the fatigue failureof wheel hub bearings is characterized by strong statistical dispersion due to the multiple coupling efectsof discrete manufacturing process,material micro-defects distribution,andrandomnessofcomplexservice loads,which makes it diffcult tomeet the demand for highconfidence prediction of modern engineering basedon deterministic theory life assessment methods.Therefore,this paperdiscusses the probabilistic statisticalinferenceofwheelhubbearing fatiguelifeundertheconditionofsmallsamples,andexpects to provide new theoretical perspectivesand technical paths forsolving the"information-poor"reliabilityassessmentproblems prevailing in engineering.

【Key words】 wheel hub bearing;fatigue life;Weibull distribution;Bayesian inference

0 引言

在汽车工业向着长寿命、高可靠性及轻量化方向演进的背景下，零部件的疲劳耐久性设计已成为整车开发流程中的核心环节。（剩余4707字）