Simulation of dynamic gauge widening and rail roll: effects on derailment and rolling contact fatigue

被引：7
|
作者：
Shu, Xinggao [1 ]
Wilson, Nicholas [1 ]
机构：
[1] Transportat Technol Ctr Inc, Pueblo, CO USA
来源：
VEHICLE SYSTEM DYNAMICS | 2008年 / 46卷
关键词：
wheel/rail contact; track models; rail rotation; gauge spreading; NUCARS (R);
D O I：
10.1080/00423110802037214
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper compares the different effects of rail rotations versus rail lateral translations oil wheel/rail (W/R) contact geometry and vehicle dynamic performance. This study. conducted by the Transportation Technology Center, Inc. (TTCI). shows that: rail rotation has significant effects oil the W/R contact geometry. especially on contact positions and contact areas. while rail translation effects on wheel contact positions and contact areas are negligible a W/R contact model with assumptions of rigid track or elastic track with only lateral and vertical rail translations cannot reflect the W/R contact geometry variations caused by rail rotations: the contact geometry variations caused by rail rotations strongly depend on the specific wheel and rail profiles under evaluation: proper rail rotation flexibilities within the safety limits could improve wheelset steering performance and decrease W/R contact stress and wear.
引用
收藏
页码：981 / 994
页数：14
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