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 本文已被：浏览 362次   下载 146次 码上扫一扫！ 铁路曲线区段轮轨接触应力计算方法 黄龙文,李正美,安琦 0 字体:加大+|默认|缩小- (华东理工大学机械与动力工程学院, 上海 200237)

DOI：10.14135/j.cnki.1006-3080.2017.01.021

Calculation Method of Wheel/Rail Contact Stress When Passing through Curved Track
HUANG Long-wen,LI Zheng-mei,AN Qi
(School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China)
Abstract:
In this paper,the wheel/rail contact problem when worn tread wheel of passenger trains running on curved track is studied.On the basis of the authors' previous studies,a mathematical model which can accurately calculate wheel/rail contact surfaces stress and inner stress is established by introducing the tangential force calculation model.In addition,an example is carried out to calculate the contact surface stress distribution and the Mises stress and the maximum shear stress at different contact positions.Furthermore,the effects of curve radius,train speed,superelevation and axle load on contact surfaces stress and inner stress are calculated and analyzed numerically.It is shown that the contact spot shape,contact surface stress distribution,the stick slip area distribution as well as the Mises stress and the maximum shear stress are changing constantly with the change of contact position.A series of regular curves are obtained and discussed.The research in this paper can provide reliable foundation for the research of wheel/rail fatigue in the future.
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