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RESEARCH PAPERS

The Buckling of a Column With Random Initial Deflections

[+] Author and Article Information
W. B. Fraser

Department of Applied Mathematics, The University of Sydney, Sydney, Australia

Bernard Budiansky

Division of Engineering and Applied Physics, Harvard University, Cambridge, Mass.

J. Appl. Mech 36(2), 233-240 (Jun 01, 1969) (8 pages) doi:10.1115/1.3564613 History: Received September 30, 1968; Online September 14, 2011

Abstract

We consider the buckling of an ensemble of infinitely long columns, with initial deflections, resting on nonlinear elastic foundations. The initial deflections are assumed to be Gaussian stationary random functions of known autocorrelation, and the problem is solved by the method of equivalent linearization. We find that each column in the ensemble has the same buckling load that depends only on the autocorrelation of the initial deflection functions. Results are presented for columns whose initial deflection functions have an exponential-cosine autocorrelation.

Copyright © 1969 by ASME
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