000021708 001__ 21708
000021708 005__ 20170622131301.0
000021708 04107 $$aeng
000021708 046__ $$k2017-06-15
000021708 100__ $$aTarquini, Danilo
000021708 24500 $$aAXIALLY EQUILIBRATED DISPLACEMENT-BASED BEAM ELEMENT: IMPLEMENTATION IN OPENSEES AND APPLICATION TO DYNAMIC ANALYSIS OF STRUCTURES

000021708 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021708 260__ $$bNational Technical University of Athens, 2017
000021708 506__ $$arestricted
000021708 520__ $$2eng$$aExperimental tests on the inelastic behavior of RC bridge piers have shown that, due to tension shift effects, the curvature profile above the base section of the structural member differs from the one that would develop according to a force-based or a classical displacement-based beam formulation with plane section hypothesis. Due to the inclined cracks in concrete members, it was found that the curvature distribution evolves in a bilinear shape along the member height during the inelastic phase of the response, and that the length of plastification increases with increasing ductility demands. Recently, it was shown that axially equilibrated displacement-based elements can more effectively predict the local-level response of RC members. The process of imposing the equilibrium of the axial forces along the element length allows the beam element to improve the simulation of both curvature and strain profiles. The finite element was originally implemented in the authors’ structural analysis software SAGRES, which was developed for nonlinear static analysis and is not freely available to the engineering community. This paper presents the validation of the implemented axially equilibrated displacement-based element in the open source finite element software OpenSees and provides some application examples of both nonlinear static and dynamic analyses. The results are compared against classical approaches (force-based and displacement-based), pinpointing the advantages of the axially equilibrated displacement-based beam element.

000021708 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021708 653__ $$aOpenSees, Dynamic Analysis, Beam Element, Displacement-based, Axial Equilibrium.

000021708 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021708 720__ $$aTarquini, Danilo$$iBeyer, Katrin$$iAlmeida, João Pacheco De
000021708 8560_ $$ffischerc@itam.cas.cz
000021708 8564_ $$s942202$$uhttps://invenio.itam.cas.cz/record/21708/files/17584.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS18] Modeling the Nonlinear Behavior of Structures
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000021708 962__ $$r21500
000021708 980__ $$aPAPER