Optimization for exact stability of 2-bar trusses

Robert Levy, David R. Brill

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

This paper is concerned with the structural optimization problem of minimizing the weight of a 2-bar truss subject to nonlinear stability constraints. Optimization problems for stability constraints are commonly handled as generalized eigenvalue problems with the resulting designs overestimating the buckling load by factors of up to 7.55. This paper presents an exact formulation that includes conditions for instability and optimality conditions in addition to optimal designs for symmetric and nonsymmetric cases using nonlinear programming. An extension to multimember trusses is derived.

Original languageEnglish
Title of host publicationComput Util Struct Eng
PublisherPubl by ASCE
Pages520-529
Number of pages10
ISBN (Print)0872626989
StatePublished - 1 Dec 1989
Externally publishedYes
EventComputer Utilization in Structural Engineering - San Francisco, CA, USA
Duration: 1 May 19895 May 1989

Publication series

NameComput Util Struct Eng

Conference

ConferenceComputer Utilization in Structural Engineering
CitySan Francisco, CA, USA
Period1/05/895/05/89

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