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An elastic plastic damage formulation for concrete: Application to elementary tests and comparison with an isotropic damage model

Jason, Ludovic ; Huerta, Antonio ; Pijaudier-Cabot, Gilles ; Ghavamian, Shahrokh

Computer Methods in Applied Mechanics and Engineering, 2006, Vol.195(52), pp.7077-7092 [Tạp chí có phản biện]

ISSN: 0045-7825 ; E-ISSN: 1879-2138 ; DOI: 10.1016/j.cma.2005.04.017

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  • Nhan đề:
    An elastic plastic damage formulation for concrete: Application to elementary tests and comparison with an isotropic damage model
  • Tác giả: Jason, Ludovic ; Huerta, Antonio ; Pijaudier-Cabot, Gilles ; Ghavamian, Shahrokh
  • Chủ đề: Concrete ; Damage ; Plasticity ; Engineering ; Applied Sciences
  • Là 1 phần của: Computer Methods in Applied Mechanics and Engineering, 2006, Vol.195(52), pp.7077-7092
  • Mô tả: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.cma.2005.04.017 Byline: Ludovic Jason (a)(b), Antonio Huerta (c), Gilles Pijaudier-Cabot (a), Shahrokh Ghavamian (b) Keywords: Concrete; Damage; Plasticity Abstract: Pure elastic damage models or pure elastic plastic constitutive laws are not totally satisfactory to describe the behaviour of concrete. They indeed fail to reproduce the unloading slopes during cyclic loading which define experimentally the value of the damage in the material. When coupled effects are considered, in particular in hydro-mechanical problems, the capability of numerical models to reproduce the unloading behaviour is essential, because an accurate value of the damage, which controls the material permeability, is needed. In the context of very large size calculations that are needed for 3D massive structures heavily reinforced and pre-stressed (such as containment vessels), constitutive relations ought also to be as simple as possible. Here an elastic plastic damage formulation is proposed to circumvent the disadvantages of pure plastic and pure damage approaches. It is based on an isotropic damage model combined with a hardening yield plastic surface in order to reach a compromise as far as simplicity is concerned. Three elementary tests are first considered for validation. A tension test, a cyclic compression test and triaxial tests illustrate the improvements achieved by the coupled law compared to a simple damage model (plastic strains, change of volumetric behaviour, decrease in the elastic slope under hydrostatic pressures). Finally, one structural application is also considered: a concrete column wrapped in a steel tube. Author Affiliation: (a) R&DO, GeM -- Institut de Recherche en Genie Civil et Mecanique, Ecole Centrale de Nantes, Universite de Nantes -- CNRS, 1 rue de la Noe, BP 92101, F44300 Nantes Cedex 3, France (b) EDF R&D, 1 avenue du General de Gaulle, 92141 Clamart Cedex, France (c) Laboratori de Calcul Numeric, Departament de Matematica Aplicada III Universitat Politecnica de Catalunya, Jordi Girona 1-3 E-08034 Barcelona, Spain Article History: Received 1 August 2004; Revised 17 March 2005; Accepted 11 April 2005
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0045-7825 ; E-ISSN: 1879-2138 ; DOI: 10.1016/j.cma.2005.04.017

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