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Fracture mechanic modeling of fiber reinforced polymer shear-strengthened reinforced concrete beam


Citation

Shahbazpanahi, Shahriar and Abang Ali, Abang Abdullah and Kamgar, Alaleh and Farzadnia, Nima (2015) Fracture mechanic modeling of fiber reinforced polymer shear-strengthened reinforced concrete beam. Composites Part B: Engineering, 68. pp. 113-120. ISSN 1359-8368; ESSN: 1879-1069

Abstract

A numerical method is developed to model shear-strengthening of reinforced concrete beam by using fiber reinforced polymer (FRP) composites. Tensile crack is simulated by a non-linear spring element with softening behavior ahead of the crack tip to model the cohesive zone in concrete. A truss element is used, parallel to the spring element, to simulate the energy dissipation rate by the FRP. The strain energy release rate is calculated directly by using a virtual crack closure technique. It is observed that the length of the fracture process zone (FPZ) increases with the application of FRP shear-strengthening. The present model shows that the main diagonal crack is formed at the support in the control beam while it appears through the shear span in the shear-strengthened beam. Another important observation is that the load capacity increases with the number of CFRP sheets in the shear span.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1016/j.compositesb.2014.08.041
Publisher: Elsevier
Keywords: Polymer–matrix composites (PMCs); Fracture; Finite element analysis (FEA)
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 20 Apr 2021 07:18
Last Modified: 20 Apr 2021 07:18
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=https://doi.org/10.1016/j.compositesb.2014.08.041
URI: http://psasir.upm.edu.my/id/eprint/44855
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