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RESEARCH PAPERS

Determination of Admissible Temperature Increases to Prevent Vertical Track Buckling

[+] Author and Article Information
A. D. Kerr

Department of Civil Engineering, University of Delaware, Newark, Del. 19711

Y. M. El-Aini

Sundstrand Aviation, Rockford, Ill. 61101

J. Appl. Mech 45(3), 565-573 (Sep 01, 1978) (9 pages) doi:10.1115/1.3424362 History: Received February 01, 1977; Revised November 01, 1977; Online July 12, 2010

Abstract

An analysis is presented for the determination of the range of “safe” temperature increases in a railroad track, in order to prevent vertical buckling. A general nonlinear formulation of the problem is derived by using the theory of elasticity, the principle of virtual displacements and the variational calculus for variable matching points. In order to simplify the solution it is shown, on a closely related problem, that a number of highly nonlinear terms may be neglected without affecting the final results. The obtained nonlinear formulation for the railroad track is simplified accordingly. The resulting nonlinear equations are then solved, in closed form, and the obtained results are presented graphically.

Copyright © 1978 by ASME
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