高铁圆锥滚子轴承滚子与滚道间的接触分析
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摘要
基于Hertz接触理论与滚子切片理论,对高铁圆锥滚子轴承中不同凸形的滚子与滚道间的接触问题进行了数值分析.建立了滚子-滚道接触应力与接触载荷计算模型,对CRH3型高铁用轴承进行实例分析,求解其在滚子母线方向上的应力与载荷分布,并计算对数曲线型滚子在满载情况下的最佳凸度量.结果表明:滚子的应力集中程度与所受载荷大小相关;滚子的对数曲线型只能减小并不能消除滚子的应力集中现象;滚子的最佳凸度量略小于理论凸度值.
Based on Hertz contact theory and roller strip theory,this paper has made the numerical analysis on contact properties between roller with different convexities and raceway of tapered roller bearing of high speed rail.The contact stress and contact load calculation models between roller and raceway are established and the example analysis is made on CRH3high-speed rail(HSR)axle box bearing and the stress and load distribution in the direction of roller generatrix are solved and the optimal roller crowning of logarithmic curve roller is calculated under the condition of full load.Results show that the degree of stress concentration on roller is associated with the magnitude of load,logarithmic profile of roller can only reduce and fails to eliminate the stress concentration,the optimal roller crowning is lightly less than theoretical convexity.
Based on Hertz contact theory and roller strip theory,this paper has made the numerical analysis on contact properties between roller with different convexities and raceway of tapered roller bearing of high speed rail.The contact stress and contact load calculation models between roller and raceway are established and the example analysis is made on CRH3high-speed rail(HSR)axle box bearing and the stress and load distribution in the direction of roller generatrix are solved and the optimal roller crowning of logarithmic curve roller is calculated under the condition of full load.Results show that the degree of stress concentration on roller is associated with the magnitude of load,logarithmic profile of roller can only reduce and fails to eliminate the stress concentration,the optimal roller crowning is lightly less than theoretical convexity.
引文
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[11]朱龙泉.铁路轴承的凸度设计及热应力分析[D].武汉:武汉科技大学,2012.ZHU Longquan.Railway bearings protruding degree of design and thermal stress analysis[D].Wuhan:Wuhan University of Science and Technology,2012.(in Chinese)
[12]罗继伟,罗天宇.滚动轴承分析计算与应用[M].北京:机械工业出版社,2009:67-69.LUO Jiwei,LUO Tianyu.Analysis calculation and application of roller bearings[M].Beijing:China Machine Press,2009:67-69.(in Chinese)
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[14]杨晓蔚.高速铁路轴承概述[J].轴承,2011(10):59-61.YANG Xiaowei.Overview of high-speed railway bearings[J].Bearings,2011(10):59-61.(in Chinese)
[2]巴春喜.铁路机车轴箱轴承的失效分析[J].铁道机车车辆,2003,23(2):35-36.BA Chunxi.Failure analysis of axle box bearing of locomotives[J].Railway Locomotive and Car,2003,23(2):35-36.(in Chinese)
[3]JOHNSON K L.Introduction to contact mechanics:a summary of the principal formulae[M].Berlin:Springer Netherlands,1992:589-603.
[4]SINGH K P,PAUL B.Numerical solution of nonhertzian elastic contact problems[J].Journal of Applied Mechanics,1974,41(2):484-490.
[5]HARTNETT M J.The analysis of contact stresses in rolling element bearings[J].Journal of Lubrication Technology,1979,101(1):105-109.
[6]陈家庆,张沛,徐林林.滚动轴承滚子凸度设计的理论研究进展[J].北京石油化工学院学报,2001,9(1):32-38.CHEN Jiaqing,ZHANG Pei,XU Linlin.Theoretical research on crowned design of roller bearing[J].Journal of Beijing Institute of Petro-chemical Technology,2001,9(1):32-38.(in Chinese)
[7]马芳,李海涛.圆锥滚子轴承滚子凸度设计[J].哈尔滨轴承,2014,35(2):2-4.MA Fang,LI Haitao.Design on roller crown of tapered roller bearings[J].Journal of Harbin Bearing,2014,35(2):2-4.(in Chinese)
[8]王志伟,苗利军,孟玲琴.圆锥滚子轴承滚子凸度的优化设计[J].机械设计与制造,2014(6):55-61.WANG Zhiwei,MIAO Lijun,MENG Lingqin.Optimal design of roller convexity of tapered roller bearing[J].Machinery Design&Manufacture,2014(6):55-61.(in Chinese)
[9]张乐宜.高速铁路客车圆锥滚子轴承凸度及动态性能分析[D].洛阳:河南科技大学,2013.ZHANG Leyi.Analysis on convexity and dynamic performance of tapered roller bearing for high speed railway coach[D].Luoyang:Henan University of Science and Technology,2013.(in Chinese)
[10]徐浩,汤勇,王大力.圆锥滚子轴承凸度设计[J].轴承,2003(9):6-8.XU Hao,TANG Yong,WANG Dali.Crowning design of tapered roller bearing[J].Bearing,2003(9):6-8.(in Chinese)
[11]朱龙泉.铁路轴承的凸度设计及热应力分析[D].武汉:武汉科技大学,2012.ZHU Longquan.Railway bearings protruding degree of design and thermal stress analysis[D].Wuhan:Wuhan University of Science and Technology,2012.(in Chinese)
[12]罗继伟,罗天宇.滚动轴承分析计算与应用[M].北京:机械工业出版社,2009:67-69.LUO Jiwei,LUO Tianyu.Analysis calculation and application of roller bearings[M].Beijing:China Machine Press,2009:67-69.(in Chinese)
[13]WANG Zhiwei,MENG Lingqin,HAO Wensi,et al.Finite element method analysis and optimal design of roller convexity of tapered roller bearing[J].Advanced Materials Research,2010,139/141:1079-1083.
[14]杨晓蔚.高速铁路轴承概述[J].轴承,2011(10):59-61.YANG Xiaowei.Overview of high-speed railway bearings[J].Bearings,2011(10):59-61.(in Chinese)