Localized Plastic Buckling of a Heavy Beam on a Contacting Surface

[+] Author and Article Information
H. D. Yun, S. Kyriakides

Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, Tex. 78712

J. Pressure Vessel Technol 108(2), 146-150 (May 01, 1986) (5 pages) doi:10.1115/1.3264762 History: Received August 02, 1984; Revised March 11, 1985; Online November 05, 2009


The paper considers the uplifting of a long elastoplastic heavy beam on a rigid flat foundation caused by an axial load. The problem is studied through a large deflection formulation. The beam is considered to possess a localized initial geometric imperfection. It is found that the load-deflection response is characterized by a limit load. Plastic effects can precipitate the limit load and cause a more localized type of deformation with higher curvatures. The problem is presented as a model for the “beam mode buckling” of pipelines due to earthquake-caused axial loads.

Copyright © 1986 by ASME
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