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Title
Japanese: 
English:FRP-confined concrete model based on damage-plasticity and phase-field approaches 
Author
Japanese: Hossein Saberi, BUITINH QUOC, 古川 陽, Alireza Rahai, 廣瀬 壮一.  
English: Hossein Saberi, Tinh Quoc Bui, Akira Furukawa, Alireza Rahai, Sohichi Hirose.  
Language English 
Journal/Book name
Japanese: 
English:Composite Structures 
Volume, Number, Page Vol. 244        pp. 112263
Published date Mar. 2020 
Publisher
Japanese: 
English:Elsevier 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://www.sciencedirect.com/science/article/pii/S0263822319341212
 
DOI https://doi.org/10.1016/j.compstruct.2020.112263
Abstract This paper is concerned with the finite element (FE) modeling of mechanical behavior for concrete columns wrapped with fiber reinforced polymer (FRP) materials under uniform compression load. The introduced model is based on modifying damage evolution in concrete and FRP considered as a brittle material. In this work, the Miehe phase-field approach is employed for capturing the damage in the FRP, whereas the damage in concrete is evaluated by introducing an extension of the simplified damage formulation based on the Miehe phase-field model. One of the most advantages of the proposed model is that the ultimate condition is automatically imposed in the FE model, and there is no longer required any additional ad hoc criteria that consider in the previous models to evaluate the ultimate conditions. As the brittle material behavior, the simulation results show that the damage of the specimen under compression load at the final steps is rapidly developed and is significant. Moreover, the force–displacement curves are in good agreement with the experimental tests.

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