基于ANSYS的轮对过盈配合微动分析  

Fretting Analysis of Interference Fitting of Wheel-set Based on ANSYS

作　　者：曾飞[1,2] 陈光雄[1] 周仲荣[1] 

机构地区：[1]西南交通大学摩擦学研究所,成都610031 [2]中国工程物理研究院总体工程研究所,绵阳621000

出　　处：《机械工程学报》2011年第5期121-125,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50821063);国家重点基础研究发展计划(973计划;2007CB714700)资助项目

摘　　要：铁道机车车辆在运行过程中,轮对过盈配合面边缘由于微动产生微动损伤。微动幅值是影响轮对过盈配合面微动运动特性的重要因素之一,由于难以用仪器进行测量,利用通用有限元软件ANSYS对RD2轮对过盈配合面在210 kN轴重载荷作用下的微动情况进行了模拟分析。以轮对受轴重载荷静止于轨道上的弯曲变形情况来表征其运行过程中某一时刻的弯曲变形情况,通过计算,获得轮对过盈配合面内、外侧区域的轮座与轮毂某接触节点副的相对滑动规律和应力分布。结果表明,在轮对转动过程中,轮座与轮毂配合面内、外侧接触区内的节点副相对运动模式为变方向、变应力的复合微动。在210 kN轴重载荷作用下,轮对过盈配合面间所计算节点副的最大轴向相对位移为32μm,最大切向相对位移为2.6μm。During wheel-set of railway vehicle rolling,the edges of the interference fitting surfaces between wheel seat and wheel hub are worn due to fretting.Fretting amplitudes between wheel and axle are difficult to be measured,which is one of the important factors influencing fretting characteristics.The fretting of the interference fitting of RD2 wheel-set under a load of 210 kN is simulated and analyzed by using ANSYS.The bending deformation of the wheel-set at a moment during its rolling is characterized by that of the wheel-set under a load of 210 kN which is statically on railway.The relative sliding mode and stress distribution of a certain contact node pair on the interference fitting surfaces between the wheel seat and wheel hub are obtained.The result shows that during the wheel-set rolling the contact node pair is subjected to a composite fretting consisting of reciprocating sliding and varying stress.Under an applied load of 210 kN,the maximum relative displacement in the axial direction of the contact node pair is about 32 μm and the maximum relative displacement in the circumferential direction is about 2.6 μm.

关 键 词：铁路轮对 过盈配合 复合微动 有限元 

分 类 号：TH117[机械工程—机械设计及理论]