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dc.contributor.authorJowhari Moghadam, S.
dc.contributor.authorIzzuddin, B.A.
dc.description.abstractThe theory of buckling strength of compression members in the plastic range has been extensively studied, and numerical methods already exist which deal with such behaviour. However, there is significant research interest in developing analytical models for elasto-plastic buckling, largely driven by the need for simplified mechanics-based design tools, but also by the desire for enhanced understanding of this complex phenomenon. This paper is intended to illustrate the mechanics of the elasto-plastic buckling response of stocky columns by means of a simplified analytical model, starting from the point of buckling initiation and considering the post-buckling response. In this model, the Rotational Spring Analogy is used for formulating the geometric stiffness matrix, whereas the material stiffness matrix is obtained with due consideration for the spread of material plasticity. In addition to establishing some key features of elasto-plastic buckling, the imperfection sensitivity in the plastic range is also studied and as a result a threshold level of imperfection is identified.
dc.format.extent10 p.
dc.rightsOpen Access
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subject.lcshFinite element method
dc.subject.lcshPlasticity -- Mathematical models
dc.subject.otherElasto-plastic Buckling, Simplified Analytical Model, Inelastic Behaviour, Rotational Spring Analogy, Stocky Column, Imperfection Sensitivity
dc.titleAn analytical model for elasto-plastic buckling of columns
dc.typeConference report
dc.subject.lemacElements finits, Mètode dels
dc.subject.lemacPlasticitat -- Models matemàtics
dc.rights.accessOpen Access
local.citation.contributorCOMPLAS XII
local.citation.publicationNameCOMPLAS XII : proceedings of the XII International Conference on Computational Plasticity : fundamentals and applications

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