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TitlePlastic-damage smeared crack model to simulate the behaviour of structures made by cement based materials
Author(s)Behbahani, A. E.
Barros, Joaquim A. O.
Ventura-Gouveia, A.
KeywordsFEM analysis
Fixed smeared crack model
Isotropic damage
Shear strengthening
Issue dateAug-2015
PublisherPergamon-Elsevier Science Ltd
JournalInternational Journal of Solids and Structures
CitationBehbahani, A. Edalat, Barros, J. A. O., & Ventura-Gouveia, A. (2015). Plastic-damage smeared crack model to simulate the behaviour of structures made by cement based materials. International Journal of Solids and Structures, 73-74, 20-40. doi: 10.1016/j.ijsolstr.2015.07.027
Abstract(s)This work proposes a constitutive model to simulate nonlinear behaviour of cement based materials subjected to different loading paths. The model incorporates a multidirectional fixed smeared crack approach to simulate crack initiation and propagation, whereas the inelastic behaviour of material between cracks is treated by a numerical strategy that combines plasticity and damage theories. For capturing more realistically the shear stress transfer between the crack surfaces, a softening diagram is assumed for modelling the crack shear stress versus crack shear strain. The plastic damage model is based on the yield function, flow rule and evolution law for hardening variable, and includes an explicit isotropic damage law to simulate the stiffness degradation and the softening behaviour of cement based materials in compression. This model was implemented into the FEMIX computer program, and experimental tests at material scale were simulated to appraise the predictive performance of this constitutive model. The applicability of the model for simulating the behaviour of reinforced concrete shear wall panels submitted to biaxial loading conditions, and RC beams failing in shear is investigated.
AccessOpen access
Appears in Collections:ISISE - Artigos em Revistas Internacionais

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