In this investigation, dynamic characteristics of independently rotating wheel systems are discussed. To this end, a multibody independently rotating wheelset (IRW) model is developed using the method of velocity transformation. The linear stability analysis of a two-axle IRW truck is performed, the hunting stability and vibration characteristics of IRW truck are investigated, and the results are compared with those obtained using the multibody dynamics model. Good agreement is obtained in hunting frequencies and critical speeds. It is shown using the linear IRW equations that since a constant forward speed is assumed for IRW, the longitudinal slip can occur due to the change in the wheel rolling radius. This leads to longitudinal creep forces even in the case of IRW and it contributes to a coupling of the lateral, yaw, and pitch motions of IRW. Furthermore, it is observed in several numerical examples that, due to small self-centering forces of IRW, continuous flange contact occurs on tangent track, while in curve negotiation, flange contacts on outer wheel of the front axle, as well as that on inner wheel of the rear axle, occur. Such an effect can be more significant when sharp curve negotiation is considered as encountered in light rail vehicle applications.
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January 2011
Research Papers
Dynamics of Independently Rotating Wheel System in the Analysis of Multibody Railroad Vehicles
Hiroyuki Sugiyama,
Hiroyuki Sugiyama
Department of Mechanical Engineering,
e-mail: hsugiy1@rs.kagu.tus.ac.jp
Tokyo University of Science
, Tokyo 102-0073, Japan
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Ryosuke Matsumura,
Ryosuke Matsumura
Department of Mechanical Engineering,
Tokyo University of Science
, Tokyo 102-0073, Japan
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Yoshihiro Suda,
Yoshihiro Suda
Institute of Industrial Science,
University of Tokyo
, Tokyo 153-8505, Japan
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Hideaki Ezaki
Hideaki Ezaki
System Technology Development Center,
Kawasaki Heavy Industries, Ltd.
, Hyogo 673-8666, Japan
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Hiroyuki Sugiyama
Department of Mechanical Engineering,
Tokyo University of Science
, Tokyo 102-0073, Japane-mail: hsugiy1@rs.kagu.tus.ac.jp
Ryosuke Matsumura
Department of Mechanical Engineering,
Tokyo University of Science
, Tokyo 102-0073, Japan
Yoshihiro Suda
Institute of Industrial Science,
University of Tokyo
, Tokyo 153-8505, Japan
Hideaki Ezaki
System Technology Development Center,
Kawasaki Heavy Industries, Ltd.
, Hyogo 673-8666, JapanJ. Comput. Nonlinear Dynam. Jan 2011, 6(1): 011007 (8 pages)
Published Online: October 4, 2010
Article history
Received:
May 29, 2009
Revised:
September 9, 2009
Online:
October 4, 2010
Published:
October 4, 2010
Citation
Sugiyama, H., Matsumura, R., Suda, Y., and Ezaki, H. (October 4, 2010). "Dynamics of Independently Rotating Wheel System in the Analysis of Multibody Railroad Vehicles." ASME. J. Comput. Nonlinear Dynam. January 2011; 6(1): 011007. https://doi.org/10.1115/1.4002089
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