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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 110
PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Edited by: J. Pombo
Paper 234

Investigation of Creep Force Characteristics under a Flange Climbing Condition

H. Doi1, T. Miyamoto1 and H. Ishida2

1Railway Dynamics Division, Railway Technical Research Institute, Tokyo, Japan
2Department of Mechanical Engineering, Meisei University, Tokyo, Japan

Full Bibliographic Reference for this paper
H. Doi, T. Miyamoto, H. Ishida, "Investigation of Creep Force Characteristics under a Flange Climbing Condition", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 234, 2016. doi:10.4203/ccp.110.234
Keywords: railway, flange climbing, creep force, roller rig, full-scale wheelset.

Summary
This paper presents an experimental investigation of the creep force characteristics between wheel and rail especially under the condition of flange climbing. The objective is to gain further understanding of flange climb derailment on small curves at low speed. The flange climbing condition was simulated by means of an apparatus consisting of roller rigs and a full-scale wheelset provided with the function of controlling the angle of attack (yaw angle) and imbalance between the left and right wheel loads. Creep force characteristics under dry conditions were obtained based on the measurement data combined with contact geometry calculation between the wheel-roller. The experimental results of the creep force characteristics for various yaw angles show that the creep force on the flange contact surface is saturated regardless of the yaw angle, and that the tread contact surface is considered to be larger than the theoretical values before it reaches its saturation point.

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