Search results for "Finite-element modeling"

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Computational Study of Failure of Hybrid Steel Trussed Concrete Beams

2017

This study investigates the failure behavior of hybrid steel trussed concrete beams (HSTCBs) under three-point bending through a series of finite-element (FE) simulations. The FE model employs well-established constitutive relations of concrete and steel with a simplified contact condition between the concrete and steel truss. The numerical model is compared with existing experimental data as well as a FE model that uses a more sophisticated concrete-steel interfacial model. The comparison shows that the present model is able to capture various failure mechanisms of the beam and its peak load capacity. The model is applied to investigate the behavior of a set of HSTCBs of different sizes, w…

Materials scienceConcrete beams0211 other engineering and technologies020101 civil engineering02 engineering and technologyBendingComposite beams0201 civil engineeringSize and geometrical effectsSize and geometrical effect021105 building & constructionGeneral Materials ScienceCivil and Structural EngineeringSeries (mathematics)business.industryMetal and composite structuresMechanical EngineeringComposite beam; Finite-element modeling; Fracture; Size and geometrical effects; Metal and composite structuresBuilding and ConstructionStructural engineeringFinite-element modelingFinite element methodFractureMechanics of MaterialsFracture (geology)Fe modelComposite beambusinessJournal of Structural Engineering
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A strategy for the finite element modeling of FRP-confined concrete columns subjected to preload

2018

Abstract Compressive behavior of columns strengthened by means of an outer elastic confinement provided e.g. by fiber-reinforced polymer (FRP) jackets has become a main topic in the field of structural retrofitting. In details, the problem of the response assessment of strengthened columns is still under study. Many analytical formulations have been proposed to describe the compressive behavior of confined concrete under both monotonic and cyclic loads. However, the effect of a stress/strain level in the columns already present prior to apply the confinement has been generally neglected until now, also because of the lack of well defined strategies of modeling. In this frame, here, (1) a FE…

Materials scienceConfinement lateral pressure0211 other engineering and technologies020101 civil engineeringMonotonic function02 engineering and technologyConcrete damaged plasticity model0201 civil engineering021105 building & constructionRetrofittingWell-definedfiber reinforced polymer (FRP)SofteningCivil and Structural Engineeringbusiness.industryStructural engineeringFibre-reinforced plasticFinite-element modelingPreloadingFinite element methodConfined concretePreloadSettore ICAR/09 - Tecnica Delle CostruzioniHardening (metallurgy)ABAQUSbusinessConfinement
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