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NMCE 2017, 1(3): 55-66 Back to browse issues page
A simple and efficient plasticity-fracture constitutive model for confined concrete
Hadi Meidani
Abstract:   (649 Views)
A plasticity-fracture constitutive model is presented for prediction of the behavior of confined plain concrete. A three-parameter yield surface is used to define the elastic limit. Volumetric plastic strain is defined as hardening parameter, which together with a nonlinear plastic potential forms a non-associated flow rule. The use of non-associated flow rule improves the prediction of the dilation behavior of concrete under compressive loading. To model the softening behavior, a fracture energy-based function is used to describe strength degradation in post-peak regime. The Euler-forward algorithm is used to integrate the constitutive equations. The proposed model is validated against the results of triaxial compressive experiments. Finally, the behavior of plain concrete confined by layers of carbon fiber reinforced polymer is studied to show capability of the model for passive confinement.
Keywords: Plasticity-fracture, Constitutive model, Confined concrete
Full-Text [PDF 416 kb]   (78 Downloads)    
Type of Study: Research | Subject: Special
Received: 2015/06/23 | Accepted: 2015/06/23 | Published: 2015/06/23
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Meidani H. A simple and efficient plasticity-fracture constitutive model for confined concrete. NMCE. 2017; 1 (3) :55-66
URL: http://nmce.kntu.ac.ir/article-1-42-en.html
Volume 1, Number 3 (3-2017) Back to browse issues page
نشریه روشهای عددی در مهندسی عمران Journal of Numerical Methods in Civil Engineering
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