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Title: Equivalent post-buckling models for the flexural behaviour of steel connections
Authors: Silva, L. Simões da 
Coelho, Ana Girão 
Lucena Neto, Eliseu 
Keywords: Bending; Component method; Nonlinear behaviour
Issue Date: 2000
Citation: Computers & Structures. 77:6 (2000) 615-624
Abstract: Analytical solutions for the evaluation of the behaviour of steel connections are presented which are able to reproduce their full non-linear behaviour. Because usual models for the analysis of steel connections consist of translational springs and rigid links whereby the springs exhibit a non-linear force-deformation response, usually taken as a bi-linear approximation, they require an incremental non-linear analysis. Using a substitute elastic post-buckling model where each bi-linear spring is replaced by two equivalent elastic springs in the context of a post-buckling stability analysis using an energy formulation, closed-form solutions are obtained for a connection loaded in bending. Application to a beam-to-column welded connection using the component (spring) characterisation of code regulations yields the same results in terms of moment resistance and initial stiffness, being additionally able to trace the full unstiffening response.
Rights: openAccess
Appears in Collections:FCTUC Eng.Civil - Artigos em Revistas Internacionais

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