Responses of Continuous, Elastically Supported Beam Guideways to Transit Loads

[+] Author and Article Information
J. F. Wilson

School of Engineering, Duke University, Durham, N.C. 27706

S. T. Barbas

Exxon Production Research Co., Houston, Texas 77001

J. Dyn. Sys., Meas., Control 102(4), 247-254 (Dec 01, 1980) (8 pages) doi:10.1115/1.3149610 History: Received September 29, 1980; Online July 21, 2009


Solutions for nondimensional dynamic response histories are formulated for an undamped, continuous, Bernoulli-Euler beam resting on discrete, evenly-spaced, equal elastic supports. Responses depend on: The distribution of the constant force loads; a dimensionless load speed parameter; and the ratio of support stiffness to beam stiffness. Peak midspan moments and deflections are calculated over a wide range of system parameters for several beam configurations. Results are that the extreme end spans have the peak dynamic responses; that these responses increase as the relative support stiffness increases; and responses may become unbounded. Experimental measurements complement the calculations. Results are applicable to the design of cable-stayed guideways for advanced transit systems.

Copyright © 1980 by ASME
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