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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29209

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Clarifications on the Damping Mechanism Related to the Hunting Motion of the Wheel Axle of a High-Speed Railway Vehicle
In order to explain the damping mechanism, related to the hunting motion of the wheel axle of a high-speed railway vehicle, a generalized dynamic model is proposed. Based on such model, analytic expressions for the damping coefficient and damped natural frequency are derived, without imposing restrictions on the ratio between the lateral and vertical creep coefficients. Influence of the travelling speed, wheel conicity, dimensionless mass of the wheel axle, ratio of the creep coefficients, ratio of the track span to the yawing diameter, etc. on the damping coefficient and damped natural frequency, is clarified.
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[1] S. Iwnicki, Handbook of Railway Vehicle Dynamics. New York: CRC Press, Taylor & Francis, 2006, pp. 21–38.
[2] A.H. Wickens, Fundamentals of Rail Vehicle Dynamics. New York: Swets & Zeitlinger Publishers, 2003, pp. 101–123.
[3] H. Sakai, “A Consideration to Hunting of Wheel Set,” Proceedings of JSME TRANSLOG, 1101, pp. 1–10, 2016 (in Japanese).
[4] U. Olofsson, and R. Lewis, Tribology of the Wheel-Rail Contact. New York: Taylor & Francis, 2012, pp. 121–141.
[5] A. Kapoor, D.I. Fletcher, F. Schmid, K.J. Sawley, and M. Ishida, Tribology of Rail Transport. New York: CRC Press, 2001, pp. 161–202.
[6] D.J. Inman, and R.J. Singh, Engineering Vibration. New York: Prentice Hall, 2001
[7] H. Benaroya, and M.L. Nagurka, Mechanical Vibration: Analysis, Uncertainties, and Control. London: CRC Press, 3rd ed., 2010
[8] F.W. Carter, “On the Action of a Locomotive Driving Wheel,” Proceeding of the Royal Society London, A112, pp. 151–157, 1926.
[9] T. Matsudaira, N. Matsui, S. Arai, and K. Yokose, “Problems on Hunting of Railway Vehicle on Test Stand,” Journal of Engineering for Industry, 91(3), pp. 879–885, 1969.
[10] J.J. Kalker, “Wheel-Rail Rolling Contact Theory,” Wear, 144, pp. 243–261, 1991.
[11] D. Yamamoto, “Study on the Running Vibration Characteristics of Railway Vehicle. 1st Report: Estimation of Creep Coefficient between Actual Wheel and Rail,” Journal of System Design and Dynamics, 4(6), pp. 823–836, 2010.
[12] H. Sakamoto, and M. Yamamoto, “Effect on Nonlinear Creep Force on Railway Truck Dynamics,” Transactions of JSME, 52(473), pp. 302–309, 1986 (in Japanese).
[13] K. Yokose, M. Igarashi, and J. Takayanagi, “Basic Investigation on the Hunting Motion of the Railway Truck by Considering the Nonlinear Characteristics of the Creep Force,” Transactions of JSME, 51(466), pp. 1198–1208, 1985 (in Japanese).
[14] B. Suciu, “Frictional Effects on the Dynamics of a Truncated Double- Cone Gravitational Motor,” International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 11(1), pp. 28–38, 2017.
[15] A.H. Wickens, “The Dynamic Stability of Railway Vehicle Wheelsets and Bogies having Profiled Wheels,” International Journal of Solids and Structures, 1(3), pp. 319–341, 1965.
[16] M. Smith, “Train Suspension System,” Patent No. US 9403543, pp. 1–13, 2016.
[17] B. Suciu, and R. Kinoshita, “Investigation on the Bogie Pseudo-Hunting Motion of a Reduced-Scale Model Railway Vehicle Running on Double- Curved Rails,” International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 11(1), pp. 39–46, 2017.
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