The Relationship between Contact Angle Difference and Equivalent Conicity of High-speed EMU

摘要：

　　This paper studied the relationship among the linear model of wheel/rail characteristic parameters,the contact angle difference,the equivalent conicity and roll angle.The standard and worn profiles of S 1002CN,XP55 and LMA were matched with 60 kg/m rail separately.The results of the study show that the ratio of contact angle difference to equivalent conicity changes linearly along lateral wheelset displacement within 5mm.Taking rolling angle into consideration,the contact angle difference and equivalent conicity in nominal position (3mm) display a linear relationship.Just considering the contact angle difference and roll angle in the fitting formula for the wheel/rail linear model calculation,the quasi-linear calculation of the critical speed could be more accurate.Therefore,the wheel/rail linear model characteristic parameters roll angle and the contact angle difference in the nominal position have certain effect on vehicle dynamic performance like equivalent conicity.

关键词： Wheel/ail contact Contact angle difference Equivalent conicity Roll angle

作者: Zhi Bo Zhang Ping Bo Wu Ren Luo Feng Gan

作者单位: Traction Power State Key Laboratory,Southwest Jiaotong University,Chengdu,610031,Sichuan,China

会议类型: 国际会议

会议名称: the 2012 International Conference on Manufacturing Engineering and Automation (2012年制造工程与自动化国际会议(ICMEA2012))

会议地点: 广州

会议语种:英文

页码: 1920-1924

在线出版日期: 2012-11-16（万方平台首次上网日期，不代表论文的发表时间）