轮辐的柔性变形结构的效果和在滚动接触的轮/轨道的潜变力的追踪

轮辐的柔性变形结构的效果和在滚动接触的轮/轨道的潜变力的追踪(中文3900字,英文3900字)
金学松 吴平博 文泽峰
中国 成都 600031 西南交通大学 国家的牵引动力实验室
摘录:在这一篇论文中，对滚动接触机械装置上的滚动接触体结构柔性变形的效果简短地分析。轮副和轨道对轮的潜变力的结构变形的效果和轨条详细地被分析研究。轮副的一般结构柔性变形和轨道首先分别用有限元的机械要素方法和关系一起分析,从而获得表达滚动方向和轮副的横方向的结构柔性变形和对应的负载。按照它们之间的关系,我们计算轮和轨条的在一点相接接触的影响力系数。影响力系数代表发生在轮/轨道接触的一个小的矩形面积上的单位面积的牵引力引起的结构柔性变形。他们习惯校订一些与Kalker的无赫兹的形状滚动接触的三维空间的有柔性体的理论 Bossinesq 和 Cerruti 的公式一起获得的影响力系数。在潜变力的分析中, 利用了修正的 Kalker 的理论。从轮副和轨道的结构柔性变形中获得的数字结果表明潜变力发挥的很大影响力。
2002 Elsevier 科学出版社版权所有。
关键字: 轮/轨条; 滚动接触;潜变力;柔性变形结构

Effects of structure elastic deformations of wheelset and track on creep forces of wheel/rail in rolling contact
 Xuesong Jin, Pingbo Wu, Zefeng Wen
 National Traction Power Laboratory, Southwest Jiaotong University, Chengdu 610031, PR China
Abstract: In this paper the mechanism of effects of structure elastic deformations of bodies in rolling contact on rolling contact performance is briefly analyzed. Effects of structure deformations of wheelset and track on the creep forces of wheel and rail are investigated in detail. General structure elastic deformations of wheelset and track are previously analyzed with finite element method, and the relations, which express the structure elastic deformations and the corresponding loads in the rolling direction and the lateral direction of wheelset, respectively, are obtained. Using the relations, we calculate the influence coefficients of tangent contact of wheel and rail. The influence coefficients stand for the occurring of the structure elastic deformations due to the traction of unit density on a small rectangular area in thecontact area of wheel/rail. They are used to revise some of the influence coefficients obtained with the formula of Bossinesq and Cerruti in Kalker’s theory of three-dimensional elastic bodies in rolling contact with non-Hertzian form. In the analysis of the creep forces, the modified theory of Kalker is employed. The numerical results obtained show a great influence exerted by structure elastic deformations of wheelset and track upon the creep forces.