Multibody Dynamics Approach to the Modeling of Friction Wedge Elements for Freight Train Suspensions. I: Theory
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Volume 136, Issue 8
Abstract
This paper presents a theoretical application of multibody dynamics with unilateral contact to model the friction wedge interaction with the bolster and the side frame. The objective of the proposed approach is to produce a stand-alone model that can better characterize the interaction between the bolster, the wedge, and the side frame. The new model allows the wedge four degrees of freedom: vertical displacement, longitudinal displacement (between the bolster and the side frame), pitch (rotation about the lateral axis), and yaw (rotation about the vertical axis). The new model also allows for toe variation. The stand-alone model shows the capability of capturing the dynamics of the wedge which was unnoticed in previous models. The inclusion of unilateral contact conditions is integral in quantifying the behavior during lift-off and the stick-slip phenomena. The resulting friction wedge model is a three-dimensional, dynamic, stand-alone model of a bolster–friction wedge–side frame assembly.
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Acknowledgments
This work was supported by the Association of American Railways (AAR) and by the Transportation Technology Center, Inc. (TTCI) via their affiliate laboratories program at Virginia Tech. The writers would also like to acknowledge Mr. Nicholas Wilson, Mr. Curtis Urban, and Mr. Kenneth Kramp from TTCI for their assistance in this project.
References
Cusumano, J. P., and Gardner, J. F. (1997). “Dynamic models of friction wedge dampers.” Proc., 1997 IEEE/ASME Joint Rail Conf., IEEE/ASME, Piscataway, N.J./New York.
Dankowicz, H. (2004). Multibody mechanics and visualization, Springer-Verlag, Berlin.
Haug, E. J. (1989). Computer-aided kinematics and dynamics of mechanical systems, Prentice-Hall, Englewood Cliffs, N.J.
Klauser, P. E. (2004a). “Modeling friction wedges. Part I: The state-of-the-art.” Proc., IMECE04, ASME, New York.
Klauser, P. E. (2004b). “Modeling friction wedges. Part II: An improved model.” Proc., IMECE04, ASME, New York.
Lesser, M. (1992). “A geometrical interpretation of Kane’s equations.” Proc., Mathematical and Physical Sciences, The Royal Society, London.
McKisic, A. D., Ushkalov, V. F., and Zhechev, M. (2007). “Possibility of jamming and wedging in the three-piece trucks of a moving freight car.” Veh. Syst. Dyn., 45(1), 61–76.
NUCARS version 2006 user’s manual. (2006). Transportation Technology Center, Inc., Pueblo, Colo.
Okamoto, I. (1998).“How bogies work.” Railway Technology Today, Japan Railway & Transport Review 18, Dec. 1998.
Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 136 • Issue 8 • August 2010
Pages: 709 - 716
Copyright
© 2010 ASCE.
History
Received: Aug 28, 2007
Accepted: Mar 17, 2009
Published online: Jul 15, 2010
Published in print: Aug 2010
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