空心轴与实心轴过盈配合结构微动磨损与疲劳的仿真分析  

Simulation Analysis of Fretting Wear and Fatigue of Press-fitted Structure of Hollow Axle and Solid Axle

作　　者：董懿辉 鲁连涛[1] 李小萱 赵海 陈翰[1] 曾东方 DONG Yi-hui;LU Lian-tao;LI Xiao-xuan;ZHAO Hai;CHEN Han;ZENG Dong-fang(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031;Beijing EMU Depot of China Railway Beijing Group Co.,Ltd.,Beijing 102600;School of Material Science and Engineering,Anhui University of Technology,Maanshan 243000;Wheel&Tyre Institute of Technology Center,Maanshan Iron&Steel Co.,Ltd.,Maanshan 243000)

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031 [2]中国铁路北京局集团有限公司北京动车段,北京102600 [3]安徽工业大学材料科学与工程学院,马鞍山243000 [4]马鞍山钢铁股份有限公司技术中心车轮研究所,马鞍山243000

出　　处：《机械工程学报》2022年第5期161-169,共9页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51905455);国家重点实验室自主课题(2021TPL-T01);中国博士后科学基金(2021M692687);安徽省科技重大专项(202003a05020038)资助项目。

摘　　要：为了分析空心轴与实心轴过盈配合结构微动磨损与疲劳行为的差异,建立了两种过盈配合结构的微动磨损-微动疲劳联合仿真模型。该联合仿真模型基于Archard磨损方程和有限元软件ABAQUS的自适应网格技术实现了循环微动磨损的仿真,基于线性累积损伤理论和修正的SWT临界平面法实现了微动疲劳寿命预测。分析结果表明:空心轴的微动磨损比实心轴严重,微动磨损显著降低了过盈配合边缘附近的应力集中,同时在配合内部引起了新的应力集中,并导致微动裂纹萌生位置出现在配合内部。受到微动磨损的影响,空心轴的微动疲劳寿命仅约为实心轴的40%,但两种结构的微动裂纹萌生位置几乎一致。In order to analyse the difference of fretting wear and fatigue behaviour between hollow axle and solid axle press-fitted structure, the fretting wear-fretting fatigue co-simulation model of two kinds of the press-fitted structure was established. The co-simulation model is based on Archard wear equation and ALE adaptive mesh method of ABAQUS, and fretting fatigue life prediction is realized based on linear cumulative damage theory and modified SWT critical plane method. The simulation results showed that the fretting wear of the hollow axle was more serious than that of the solid axle. The stress concentration at the edge of fit decreased significantly by fretting wear. At the same time, a new stress concentration was established inside the fit and caused the cracks initiation position to appear inside the contact surface. As a result of fretting wear, the fretting fatigue life of hollow axle is only about 40% of the solid axle, and the cracks initiation position was almost the same as that of the solid axle.

关 键 词：微动磨损 微动疲劳 过盈配合 空心轴 有限元 

分 类 号：TH117[机械工程—机械设计及理论]