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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 104
Edited by: J. Pombo
Paper 260

Stabilization of a Wheelset Hunting Motion by Utilizing the Rotating Device of the Running Gear as a Gyroscopic Damper

S. Lin1, H. Yoshino2, H. Yabuno3 and Y. Suda1

1Institute of Industrial Science, The University of Tokyo, Japan
2Faculty of Science and Technology, KEIO University, Kanagawa, Japan
3Department of Intelligent Interaction Technologies, University of Tsukuba, Ibaraki, Japan

Full Bibliographic Reference for this paper
S. Lin, H. Yoshino, H. Yabuno, Y. Suda, "Stabilization of a Wheelset Hunting Motion by Utilizing the Rotating Device of the Running Gear as a Gyroscopic Damper", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 260, 2014. doi:10.4203/ccp.104.260
Keywords: stabilization, railway vehicle, hunting motion, gyroscopic damper.

A railway vehicle wheelset experiences the problem of hunting motion when the running speed becomes higher than a critical speed, which is known as a flutter-type self-excited oscillation owing to a nonconservative contact force acting between the wheels and rails. It is shown that a gyroscopic damper is effective in increasing the critical speed for the hunting motion. In this paper, a method is proposed by utilizing a rotating device such as a traction motor with a gyroscopic damper which does not require additional power to rotate. Experiments were conducted using a simple apparatus with a roller rig and a gyroscopic damper; and the results show the validity of the gyroscopic damper for the stabilization of hunting motion.

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