对数母线圆柱滚子凸度量的有限元分析_邢英杰.pdf

第31 卷 第3 期 哈 尔 滨 轴 承 Vol.31 No.3 2 0 1 0 年 9 月 J O U R N A L O F H A R B I N B E A R I N G Sep. 2 0 1 0 对数母线圆柱滚子凸度量的有限元分析 邢英杰，胡艳涛，孙 晶 （大连理工大学机械工程学院，辽宁大连116024） 摘 要：以42724QT 型铁路客车圆柱滚子轴承为分析对象，对其滚子进行对数母线凸度的分析，借助有限元软件 ANSYS 完成了在不同凸度量下的接触应力分析及比较，得到了一定载荷下的较优凸度量区间，同时进行了相同凸 度不同载荷下的接触应力比较。结果显示，为避免“边缘效应”，一定的载荷对应一个较优的凸度区间，并且理论 凸度近似值与分析后得到的最优凸度有一定的误差，即使是对数母线的滚子，当载荷超出正常加载范围时，仍会 出现“边缘效应”。 关键词：圆柱滚子轴承；对数母线；凸度设计；有限元分析 ＋ 中图分类号：TH133.33 2 ；TP391.77 文献标识码：A 文章编号：1672-4852（2010）03-0001-05 Finite element analysis on crowning of roller with logarithmic profile Xing Yingjie H u Yantao Sun J ing (School of Mechanical E ngineering, Dalian U niversity of Technology, Dalian 116024, China) A bstract: Taking 42724QT type of a cylindrical roller bearing of a rail passenger coach as research object, the analysis for crowning of the roller with logarithmic profile has been done. Through the comparison of contact stresses at different crowning values by the finite element software has been done, the optimal range of crowning value under a certain load has been got and the comparison of contact stresses also has been achieved under the same crowning and the different loads. The results show that in order to avoid “marginal effects”, a certain load corresponds to a certain range of optimal crowning value. But the approximate theoretic crowning and the results obtained by FE A have a certain margin of error. A nd when the loads exceeds the scope of the normal load, even the roller with logarithmic profile still has “marginal effects”. Keywords: cylindrical roller bearing; logarithmic profile; crowning design; finite element analysis 1 前言