新型空心车轴轮对过盈配合微动疲劳特性分析  

Fretting Fatigue Characteristics of Interference Fit Joints of Wheel and Shaft in a Locomotive

作　　者：平学成[1] 赵辽翔 

机构地区：[1]华东交通大学机电工程学院,江西南昌330013

出　　处：《机械设计与制造》2014年第7期116-119,共4页Machinery Design & Manufacture

基　　金：江西省教育厅课题(GJJ[2010]10444);载运工具与装备省部共建重点实验室

摘　　要：铁道机车车辆在运行过程中,机车轮对过盈配合,但是接触边缘由于微动会产生微动损伤。微动幅值和界面应力是影响轮对过盈配合面微动特性的重要因素。利用通用有限元软件ABAQUS对动车组轮对过盈配合面在31kN轴重载荷作用下的微动情况进行了模拟分析。通过计算,获得轮对过盈配合面内、外侧区域的轮座与轮毂的接触副的应力分布和相对滑动规律,并通过能量密度法计算接触面的损伤因子,判断轮对接触面的损伤情况。结果表明,能量密度法可以预测该结构的微动疲劳特性。When a locomotive is running, although the wheel set is in inteoeerenee fit, fretting fatigue will happen in contact edge area. Amplitude of fretting and interfacial stresses are important factors that impact local life. Analysis of contact fretting of wheel set of a CRH under 31kN axial load has been done by ABAQUS. The relative sliding mode and stress distribution of a contact pair on the inteoVerenee fitting surfaces between the wheel seat and wheel hub are calculated, and damage factor is calculated by energy density method to estimate the damage of contact surface. The results show that the energy density method can be used to predict the fatigue characteristic of the present problem.

关 键 词：新型空心车轴 机车轮对 过盈配合 微动 

分 类 号：TH16[机械工程—机械制造及自动化]