华南理工大学学报（自然科学版）2025，Vol.53Issue(7)：50-59,10.DOI:10.12141/j.issn.1000-565X.240278
考虑残余应力与杂质的齿轮接触疲劳评估模型
A Contact Fatigue Assessment Model for Gears Considering Residual Stress and Inhomogeneities
摘要
Abstract
Gear surface treatment techniques such as gear grinding,shot peening and surface finishing may generate residual stress inside the material.Meanwhile,inhomogeneities are inevitably present in metal materials.Both residual stress and inhomogeneities have a significant impact on the contact fatigue life of gears.In order to effectively assess the contact fatigue risk of gears,this paper proposes a numerical model that comprehensively considers the combined effects of residual stress and inhomogeneities.This model uses the equivalent inclusion method to convert the inhomogeneities inside the gear into inclusions containing eigenstrains,and considers the coupling effect of inhomogeneities and residual stress in the displacement equation.During the research process,the stress distribution under the joint action of residual stress and inhomogeneities is computed,and the model is verified using the finite element method.The equivalent stress is calculated using Dang Van criterion,which is then incorporated into the Lundberg-Palmgren life model to find the minimum number of cycles,and the influence laws of residual stress and inhomogeneities on the gear's contact fatigue life are analyzed.Analytical results show that inhomogeneities have a much greater influence on the contact fatigue life of gears than residual stress,and they predominantly determine the earliest meshing point of contact fatigue on the gear;and that,under the combined effects of residual tensile stress and inhomogeneities,the maximum stress in the sub-surface layer increases and shifts towards the material surface,making the gear more prone to contact fatigue.关键词
齿轮/接触疲劳/残余应力/非均质材料/风险评估/Dang Van准则Key words
gear/contact fatigue/residual stress/inhomogeneous material/risk assessment/Dang Van criterion分类
机械制造引用本文复制引用
刘义,孙霖霖,杨文瀚,郭辉,侯圣文,刘更..考虑残余应力与杂质的齿轮接触疲劳评估模型[J].华南理工大学学报（自然科学版）,2025,53(7):50-59,10.基金项目
国家自然科学基金项目(52205048) （52205048）
陕西省重点研发计划项目(2023GXLH-087,2021ZDLGY12-03)Supported by the National Natural Science Foundation of China(52205048)and the Key Research and De-velopment Program of Shaanxi Province(2023GXLH-087,2021ZDLGY12-03) （2023GXLH-087,2021ZDLGY12-03）
