A simplified model for solving wheel-rail non-Hertzian normal contact problem under the influence of yaw angle

被引：43
作者：
Sun, Yu [1 ,2 ]
Zhai, Wanming [2 ]
Ye, Yunguang [3 ]
Zhu, Liming [1 ]
Guo, Yu [4 ]
机构：
[1] Nanjing Tech Univ, Coll Transportat Sci & Engn, Nanjing 210009, Peoples R China
[2] Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Peoples R China
[3] Tech Univ Berlin, Inst Land & Sea Transport Syst, Berlin 10587, Germany
[4] Inner Mongolia Univ, Transportat Inst, Hohhot 010023, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2020年 / 174卷
基金：
中国国家自然科学基金;
关键词：
Wheel-rail contact; Non-Hertzian contact; Yaw angle; Kalker's variational method; MKP contact model; ROLLING-CONTACT; TRACK; TRAIN; PREDICTION; WEAR;
D O I：
10.1016/j.ijmecsci.2020.105554
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Wheelset yaw motion significantly affects wheel-rail non-Hertzian contact behaviour, but currently, few wheel-rail normal contact models consider this issue. In this paper, a simplified wheel-rail contact model is built to study the wheel-rail non-Hertzian normal contact problem considering the yaw angle. First, three basic assumptions for the approximate calculation of this problem are proposed and are validated by using results calculated by Kalker's variational method (KVM), and the approximate expression of the wheel-rail non-Hertzian contact problem considering the yaw angle is obtained based on these assumptions. Then, the approximate expression is applied to the MKP (Modified Kik-Piotrowski) contact model, and an improved MKP model that considers the wheelset yaw angle is proposed, i.e., the MKP-YAW model. Compared with the results calculated by KVM, the computational accuracy of the proposed MKP-YAW model in calculating the wheel-rail contact considering the yaw angle is similar to that of the MKP contact model in calculating the wheel-rail contact without considering the yaw angle.
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页数：13
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