Railway wheels and axles – Wheels – Wheel tread
Patent
1994-08-10
1996-08-27
Stormer, Russell D.
Railway wheels and axles
Wheels
Wheel tread
295 311, B60B 1902
Patent
active
055493432
ABSTRACT:
A section of a train wheel tread is formed into a continuous hyperbolic curve to respond asymptotically to changes in the path of a rail, thus, dampening lateral oscillation of the train wheels back and forth across rail. The hyperbolic curve at a minimum extends from a taping line to a wheel lift point. However, for further dampening effects the hyperbolic curve is extended from a fillet section across the taping line toward the field side of the wheel. Two tires having the same hyperbolic profile work in conjunction as a feedback system to dampen lateral oscillation while at the same time saving energy, reducing tire and rail wear.
REFERENCES:
patent: 994350 (1911-06-01), Vial
patent: 1293628 (1918-04-01), Coda
patent: 1420389 (1922-06-01), Scott
patent: 1783705 (1930-12-01), Emerson
patent: 2056729 (1936-10-01), Leisner et al.
patent: 2560729 (1951-07-01), Lynn
patent: 4294482 (1981-10-01), Scheffel et al.
patent: 4355578 (1982-10-01), Raquet
patent: 4431227 (1984-02-01), Howell
patent: 5295624 (1994-03-01), Ziethen
J. L. Koffman, "British Rail Adopt New Tire Profiles, Traction & Rolling Stock Engineer", Aug. 1970, pp. 363-365.
Rorres, C. and Anton, H., Applications of Linear Algebra, (1984), pp. 4-6;.
Friedberg, S. and Insel, A., Introduction to Linear Algebra with Applications, (1986), pp. 31, 32, 48, 49, 226-234.
Shenk, A., Calculus and Analytic Geometry, (1977), p. 416 subject LoRAN.
Stone, D. and Leary J., Railway Age, Feb. (1992), "Reinventing The Wheel".
McLachlan, P. Eng., Rail Profiles Can make A Difference, a paper presented to: American Public Transit Association (1992) Rapid Transit Conference, Los Angeles, Cal, Jun. 16, 1992.
Hay, William W., Railroad Engineering, vol. 1, pp. 47-65.
Thomas and Finney, Calculus and Analytic Geometry, 5th Ed, (1978), pp. 494-496, 7th Ed, pp. 559-60; subject is effect of curvature on periodicity per Huygen and his clock.
Elsgolts, L., Differential Equations and Calculus of Variations, Mir Publishers, Moscow, pp. 244-247, subject is stability under constantly operating perturbations.
Mayr, Otto, The Origins of Feedback Control, (1970), history.
Kellogg, Dimon Oliver, Foundations of Potential, (1953).
Leary, John F., Elkins, John A., Computer Solutions to Wheel/Rail Interaction Problems, presented at APTA Jun. 13-17, (1992), flange pressure and other subjects.
Murphy, Gordon John, Basic Automatic Control Theory, (1957), pp. 1-15, 30, 31.
Pitman, R. J. G., Automatic Control Systems Explained, (1966), good basic mechanical explanation of feedback theory particularly chapter "Inertia and Friction in Control Systems".
Ditto, William L. and Pecora, Louis M., Scientific American, Aug. (1993), Vol 269, No. 2, "Mastering Chaos".
Traub, Joseph F., Wozniakowski, Henryk, Scientific American, Jan. (1994), "Breaking Intractability".
Schroeder, M. R., Fractals, Chaos, Power Laws: Minutes From an Infinite Universe, (1991).
Dorf, Richard C., Modern Control Systems, (1974) pp. 129-131, concept of stability.
Magid, Andy R., Applied Matrix Models: a second course in Linear Algebra with Computer Applications; (1985), a method of handling over determined systems.
Law, E. H, Transactions of the ASME Journal of Engineering for Industry, Nov., (1974) pp. 1168-1174, "Nonlinear Wheelset Dynamic to Random Lateral Rail Irregularities".
Hedrick, J. Karl, Arslan, A. V., Transactions of the ASME Journal of Dynamic Systems, Measurement, and Control, Sep. (1979), vol. 101, pp. 230-237. "Nonlinear Analysis of Rail Vehicle Forced Lateral Response and Stability".
Fries, R. H., Cooperrider, N. K., Law, E. H., Transactions of the ASME Journal of Dynamic Systems, Measurement, and Control, Sep., (1981), vol. 103, pp. 201-210; "Experimental Investigation of Freight Car Lateral Dynamics".
Fries, R. H., Cooperrider, N. K., Law E. H., Transactions of the ASME Journal of Dynamic Systems, Measurement, and Control, Dec., (1978), vol. 100, pp. 238-251.
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