Analog/hybrid computer simulation is a promising tool for research into the lateral dynamics of rail vehi cles. The complexity and nonlinearity of these dynamics makes hybrid computing cost-effective. This paper describes the progressive development of analog/ hybrid simulations beginning with the basic model of the trao-degree-of-freedom wheezset and evolving into a complex, multi-degree-of-freedom, nonlinear model of a freight car. Simulation results include the limit-cycle behavior of a nonlinear wheelset model and the response of an idealized model of a freight- car. Extension of this work to more realistic freight-car models is discussed.
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Cooperrider, N.K.Law, E.H.Fries , R.H.Tsai, N.T.Theoretical and Experimental Research on Freight Car Lateral DynamicsProceedings Heavy Haul Railways Conference Perth, Australia September 1978
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Cooperrider, N.K.Hedrick, J.K.Law , E.H.Malstrom, C.W.The Application of Quasilinearization to the Prediction of Nonlinear Railway Vehicle Response In H.B. Pacejka, editor, The Dynamics of Vehicles on Roads and Railway Tracks (Swets and Zeitlinger B.V., Amsterdam, the Netherlands, 1976)
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Hadden, J.A.Law, E.H.Pre-Test Analysis and Feasibility Study of On-Board Forces and Programmed Track Irregularities Frieght CarDynamics Report to U.S. Department of Transportation on Contract DOT-OS-40018 July 1975
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Hadden, J.A.Law, E.H.Effects of Truck Design on Hunting Stability of Railway VehiclesTransactions of the ASME: Journal of Engineering for Industry vol. 99 no. 1 February 1977 pp. 162-171
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Hadden, J.A.The Effects of Truck Design and Component Flexibility on the Lateral Stability of Railway Freight Vehicles MS thesis Department of Mechanical EngineeringClemson University Clemson, South Carolina December 1976
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Hannebrink, D.N.Lee, H.S.F.Weinstock, H.Hedrick, J.K.Influence of Axle Load, Track Gauge, and Wheel Profile on Rail-vehicle HuntingASME paper no. 76-WA/RT-3
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Heller, R.Tuten, J.M.Kadala, P.S.Law, E.H.Analog and Digital Computer Simulation of Coulomb Friction Report no. FRA/ORD-78/07 Federal Rail Administration Decmeber 1977
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Hull, R.Cooperrider, N.K.Influence of Nonlinear Wheel/Rail Contact Geometry on Stability of Rail Vehicles Transactions of the ASMEJournal of Engineering for Industry vol. 99 no. 1 February 1977 pp. 172-185
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Law, E.H.Cooperrider, N.K.A Survey of Railway Vehicle Dynamics Research Transactions of the ASME: Journal of Dynamic Systems, Measurement, and Control series G vol. 96 no. 2 June 1974 pp. 132-146
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Law, E.H.Brand, R.S.Analysis of the Nonlinear Dynamics of a Railway Vehicle Wheelset Transactions of the ASME: Journal of Dynamic Systems, Measurement, and Control series G vol. 95 no. 1 March 1973 pp. 28-35
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Law, E.H.Hadden, J.A.Cooperrider, N.K.General Models for Lateral Stability Analyses of Railway Freight Vehicles Report no. FRA/OR&D-77-36 (PB-272371) Federal Railway Administration June 1977
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Malstrom, C.W.Heller, R.Khan , M.S.Hybrid Computation-an Advanced Computation Tool for Simulating the Nonlinear Dynamic Response of Railroad VehiclesPost-Conference Proceedings on Advanced Techniques in Track/Train Dynamics and DesignAssociation of American Railroads Chicago, Illinois March 1978
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Rubin, A.I.Keene, D.H.Downer , S.W.A Future for Hybrids?Research/Development vol. 26 no. 5 May 1975
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Sjostedt, L.E.Recent Swedish Work on Rail Vehicle DynamicsRail International September 1977 pp. 441-448
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Soronto, V.J.Wavel, R.B.Nixon , F.E.Cost and Speed Comparison of Hybrid versus Digital ComputersProceedings Special Symposium on Advanced Hybrid Computing San Francisco, California July 23-24, 1975 pp. 191-197
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Tsai, N.T.Law, E.H.Cooperrider, N.K.Research on Freight Car DynamicsProceedings 14th Annual Railroad Engineering Conference Pueblo, Colorado October 1977
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Wickens, A.H.Gilchrist, A.O.Railway Vehicle Dynamics- the Emergence of a Practical Theory Council of Engineering InstitutionsMacRobert Award Lecture February 1977
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Wolin, L.The Wolin-Saucier-Peak (WSP) Scientific Mix, a Quantitative Method for Comparing Analog/Hybrid and Digital Computer PerformanceProceedings Special Symposium on Advanced Hybrid Computing San Francisco, California July 23-24, 1975 pp. 181-188
