Beam on Tensionless Elastic Foundation
Publication: Journal of Engineering Mechanics
Volume 113, Issue 4
Abstract
An infinitely long elastic beam rests under gravity on a tensionless elastic foundation and is acted upon by a pair of moving loads. This action results in the creation of lift‐off regions between the beam and the foundation that effect the character of the response. The solution includes the determination of the location, magnitude, and extent of the lift‐off region(s) as well as the beam deflection at any point. Sample calculations for parameters relevant in railroad systems show that the effect of lift‐off is substantial. Also included in this analysis is the effect of constrained thermal expansion.
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References
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 113 • Issue 4 • April 1987
Pages: 542 - 553
Copyright
Copyright © 1987 ASCE.
History
Published online: Apr 1, 1987
Published in print: Apr 1987
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