[1]李怡然,丁军君,王军平,等.小半径曲线钢轨型面优化对车辆动力学性能的影响研究[J].机车电传动,2019,(02):66-70.[doi:10.13890/j.issn.1000-128x.2019.01.125]
 LI Yiran,DING Junjun,WANG Junping,et al.Research on the Influence of Rail Profile Optimization on Vehicle Dynamic Performance in Small Radius Curve[J].Electric Drive for Locomotives,2019,(02):66-70.[doi:10.13890/j.issn.1000-128x.2019.01.125]
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小半径曲线钢轨型面优化对车辆动力学性能的影响研究()
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机车电传动[ISSN:1000-128X/CN:43-1125/U]

卷:
期数:
2019年02期
页码:
66-70
栏目:
研究开发
出版日期:
2019-03-10

文章信息/Info

Title:
Research on the Influence of Rail Profile Optimization on Vehicle Dynamic Performance in Small Radius Curve
文章编号:
1000-128X(2019)02-0066-05
作者:
李怡然1丁军君1王军平2李 芾1
(1.西南交通大学 机械工程学院,四川 成都 610031; 2. 中铁物轨道科技服务集团有限公司,北京 100036)
Author(s):
LI Yiran1 DING Junjun1 WANG Junping2 LI Fu1
( 1. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 2. China Railway Materials Track Technology Service Group Co., Ltd., Beijing 100036 )
关键词:
小半径曲线钢轨型面优化轮轨关系车辆动力学
Keywords:
small radius curve rail profile optimization wheel rail relationship vehicle dynamic
分类号:
U260.11;U270.1+1
DOI:
10.13890/j.issn.1000-128x.2019.01.125
文献标志码:
A
摘要:
钢轨磨耗和滚动接触疲劳等病害会缩短钢轨使用寿命,增加铁路养护成本,甚至会威胁行车安全。为探究钢轨型面优化对车辆动力学性能的影响,建立机车、客车、货车3种车辆动力学模型,对国内某段小半径曲线钢轨型面进行优化设计,基于最小距离搜索法程序比较其轮轨接触关系,运用Simpack软件分析车辆动力学性能的变化。计算结果表明,钢轨型面进行优化后曲线上股接触范围由47 mm减小至28 mm,同时在轨距角处的接触概率明显减少,从而使钢轨侧磨明显减轻,钢轨型面优化后曲线下股轮轨接触点都集中在轨顶,避免钢轨出现满光带现象;钢轨型面优化后,外轨横向力降低3.3%~21.1%,轮轴横向力降低6.9%~21.9%,但轮轨垂向力的变化不明显;钢轨型面优化能减小机车车辆轮重减载率、脱轨系数和磨耗功率,有利于提高列车运行安全性。
Abstract:
Rail wear, rolling contact fatigue and other diseases will reduce the rail life, increase maintenance costs and even threaten vehicle safety. In order to explore the impact of rail profile optimization on vehicle dynamic performance, 3 kinds of vehicle dynamics models for locomotive, passenger car and freight car were established, and optimized a section of the domestic small radius curve rail profile, compared the wheel-rail relationship by minimum distance search method and calculated the dynamic curve passing performance of the vehicle by dynamic simulation software Simpack. The results showed that:the contact range on high rail of the curve was reduced from 47 mm to 28 mm after rail profile optimization, the contact probability at track distance was significantly lower than before, and rail side grinding was obviously decreased; the wheel-rail contact points on the low rail were concentrated on the top of track after optimization which could avoid full light strip phenomenon; rail profile optimization could decrease the wheel rail lateral force by 3.3%-21.1%, and decrease lateral wheelset force by 6.9%-21.9%, but the effect of wheel rail vertical force was not obvious; rail profile optimization could reduce the rate of wheel load reduction, derailment coefficient and wear power, improve vehicle running safety.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:李怡然(1993—),男,硕士研究生,研究方向为机车车辆动力学及钢轨型面优化技术。
更新日期/Last Update: 2019-03-10