基于机车轮对的弹性复合圆柱滚子轴承深穴结构优化设计  

Optimization Design of Deep Cavity Structure of Elastic Composite Cylindrical Roller Bearing Based on Locomotive Wheelset

作　　者：杨文[1] YANG Wen(School of Rail Transportation Equipment Intelligent Manufacturing,College of Hunan Railway Professional Technology,Zhuzhou 412001)

机构地区：[1]湖南铁道职业技术学院轨道交通装备智能制造学院,株洲412001

出　　处：《计算机与数字工程》2020年第4期960-966,共7页Computer & Digital Engineering

基　　金：国家自然科学基金项目(编号:51175168);湖南省教育厅优秀青年项目(编号:17B178)资助

摘　　要：边缘应力集中是机车轮对轴承疲劳失效主要形式之一。弹性复合圆柱滚子轴承是一种改善应力集中和综合性能的新型轴承。考虑机车轮对结构的力学性能,结合弹性复合圆柱滚子轴承的结构特性,通过理论分析确定其受载情况。为了研究应用于机车轮对的复杂载荷条件下弹性复合圆柱滚子轴承的边缘应力集中情况,将深穴结构参数化,提出深穴角度α和深穴半径c两个参数,通过有限元方法对其应力变化规律进行分析,最后通过遗传优化算法对弹性复合圆柱滚动体结构参数进行优化,得出最优结构尺寸α=58.14°,c=0.488Dmm,应用于机车轮对的弹性复合圆柱滚子轴承可以有效降低或避免"边缘效应"。分析过程和方法可为弹性复合圆柱滚子轴承的应用和设计提供有益参考。Edge stress concentration is one of the main forms of locomotive wheelset bearing fatigue failure.Elastic composite cylindrical roller bearing is a new type of bearing which can improve stress concentration and comprehensive performance.Considering the mechanical properties of locomotive wheelset structure and combining with the structural characteristics of elastic composite cylindrical roller bearing,the load condition is determined by theoretical analysis.In order to research on the complex load applied to the locomotive wheel under the condition of elastic composite edge stress concentration situation of cylindrical roller bearing,the structure of deep hole is parametered,and two parameters of deep hole angleαand deep hole radius c are put forward,through the finite element method to analyze the stress change rule.At last,through the genetic optimization algorithm of elastic composite cylindrical roller structure parameters optimization,it is concluded that the optimal structure size ofα=58.14°,c=0.488Dmm,applied to the locomotive wheel of elastic composite cylindrical roller bearing can effectively reduce or avoid"edge effect".The analysis process and method can provide useful reference for the application and design of elastic composite cylindrical roller bearings.

关 键 词：弹性复合圆柱滚动体 应力集中 有限元 接触应力 

分 类 号：TH133.33[机械工程—机械制造及自动化]