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Elasto-Plastic Buckling of Planar Beam Systems
Buckling of beams and planar systems of beams is analyzed in the elasto-plastic regime. The critical load of a compressed single beam is evaluated, for which the classical theories of the tangent and reduced elastic moduli are illustrated. The incremental(or push-over) elasto-plastic analysis of beam systems is performed, taking into account the destabilizing geometric (or second order) effects. It is shown that, as the load increases, the bifurcation of equilibrium may manifest itself before the formation of a collapse kinematics. The procedure is exemplified by some illustrative systems, for which analytical solution are developed, either exact or based on the approximate amplification rule.
Elasto-Plastic Buckling of Planar Beam Systems
Buckling of beams and planar systems of beams is analyzed in the elasto-plastic regime. The critical load of a compressed single beam is evaluated, for which the classical theories of the tangent and reduced elastic moduli are illustrated. The incremental(or push-over) elasto-plastic analysis of beam systems is performed, taking into account the destabilizing geometric (or second order) effects. It is shown that, as the load increases, the bifurcation of equilibrium may manifest itself before the formation of a collapse kinematics. The procedure is exemplified by some illustrative systems, for which analytical solution are developed, either exact or based on the approximate amplification rule.
Elasto-Plastic Buckling of Planar Beam Systems
Luongo, Angelo (author) / Ferretti, Manuel (author) / Di Nino, Simona (author)
Stability and Bifurcation of Structures ; Chapter: 8 ; 243-263
2023-02-17
21 pages
Article/Chapter (Book)
Electronic Resource
English
Elasto-plastic buckling , Tangent elastic modulus , Reduced elastic modulus , Plastic hinge method , Incremental elasto-plastic analysis , Second order push-over analysis , Buckling <italic>vs</italic> collapse Engineering , Mechanical Statics and Structures , Solid Mechanics , Mechanical Engineering , Structural Materials , Solid Construction , Building Construction and Design
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