High-fidelity prediction of crack formation in 2D and 3D pullout tests
Visualitza/Obre
10.1016/j.compstruc.2016.05.001
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/89423
Tipus de documentArticle
Data publicació2016-08
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
This paper presents the 2D and 3D numerical analysis of pullout tests on steel anchorages in concrete blocks using standard and mixed finite elements. A novel (stabilized) mixed formulation in the variables of total strain 8 and displacements u is introduced to overcome the intrinsic deficiencies of the standard displacement-based one in the context of localization of strains, such as mesh dependency. The quasi brittle behavior of concrete is described through an elastoplastic constitutive law with a local Rankine yielding criterion. The proposed formulation is shown to be a reliable and accurate tool, sensitive to the physical parameters of the pullout tests, but objective with respect to the adopted FE mesh. Furthermore, the mixed epsilon/u finite element is able to capture the correct failure mechanism with relatively coarse discretizations. At the same time, the spurious behavior of the standard formulation is not alleviated by mesh-refinement.
CitacióBenedetti, L., Cervera, M., Chiumenti, M. High-fidelity prediction of crack formation in 2D and 3D pullout tests. "Computers & structures", Agost 2016, vol. 172, p. 93-109.
ISSN0045-7949
Versió de l'editorhttp://www.sciencedirect.com/science/article/pii/S0045794916302243
Fitxers | Descripció | Mida | Format | Visualitza |
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High-fidelityPullout-2016-CaS.pdf | Articulo Post-Print | 10,35Mb | Visualitza/Obre |