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Title:
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New tension-compression damage model for complex analysis of concrete structures
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Author:
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Paredes, Jairo A.; Oller Martínez, Sergio Horacio; Barbat Barbat, Horia Alejandro
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria |
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Abstract:
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A new damage model, based on continuum damage mechanics and simulating the opening, closing, and reopening of cracks in concrete using only one surface of discontinuity, is proposed in this article. The model complies with the thermodynamics principles of nonreversible, isothermal, and adiabatic processes. Two scalar internal variables have been defined: a tensile damage variable d+d+ and a compressive damage variable d-d-; the threshold of damage is controlled by only one surface of discontinuity and a new parameter controlling the damage variable that should be activated. This new parameter represents the ratio of tensile stress to compressive stress in the damaged material. The continuity of response under complex loads, which is one of the aims of this work, is ensured. An adequate response under different types of loads leads to the conclusion that the proposed model provides a powerful tool to numerically analyze reinforced concrete structures. Validation and illustrative examples are included in the article. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
-Concrete construction--Deterioration
-Damage model
-Nonlinear analysis
-Concrete
-Finite-element method (FEM)
-Formigó -- Deterioració |
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Rights:
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Document type:
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Article - Submitted version
Article |
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Published by:
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American Society of Civil Engineers (ASCE)
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