Inelastic Post‐buckling Analysis of Trusses
Publication: Journal of Structural Engineering
Volume 109, Issue 9
Abstract
Geometric and physical nonlinearities are considered in the investigation of the post‐critical ultimate load conditions of space trusses. The inelastic behavior of struts is accounted for by tracing the complete stress‐strain relationships in the elastoplastic range. The unloading characteristics of struts in the post‐critical elastic‐perfectly plastic stage are determined and the irreversibility of plastic strains are considered through an incremental procedure. The dynamic relaxation method is used for the solution of the nonlinear algebraic equilibrium equations. The method does not require the evaluation of any stiffness matrix, but only direct use of the relatively simple force‐displacement relations of the individual discrete elements is needed. Numerical examples are presented for two test problems and comparative results are obtained for different stress‐strain laws.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 109 • Issue 9 • September 1983
Pages: 2129 - 2147
Copyright
Copyright © 1983 ASCE.
History
Published online: Sep 1, 1983
Published in print: Sep 1983
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