Vol. 14, No. 3, 2019

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Development of fracture mechanics model of beam retrofitted with CFRP plate subjected to cyclic loading

Shahriar Shahbazpanahi and Hunar Farid Hama Ali

Vol. 14 (2019), No. 3, 413–427

A new finite element model was proposed to simulate a concrete beam retrofitted by carbon fiber reinforced polymer (CFRP) composite under cyclic loading. A link element was introduced as interface element to model crack propagation based on the cohesive law in the concrete material. Then the mass and the damping matrix of the link element were defined. A bar element was implemented to simulate the CFRP and then the energy release rates was determined. The load-displacement of the beam was compared with the existing experimental test data and conventional fracture mechanics models carried out using ABAQUS software. The load-displacement curves found by the proposed model were in reasonable agreement with the results of existing experimental data (5.4%–7.6% difference) while conventional fracture mechanics models carried out by the software ABAQUS showed a greater difference (15.2%–24% difference) when compared to the previous experimental tests.

ABAQUS, beam, cyclic loading, cohesive, CFRP, propagation
Received: 11 February 2019
Revised: 21 April 2019
Accepted: 12 May 2019
Published: 8 October 2019
Shahriar Shahbazpanahi
Department of Civil Engineering
Sanandaj Branch, Islamic Azad University
Sanandaj, Iran
Hunar Farid Hama Ali
Department of Building and Construction Engineering
University of Halabja
Kurdistan, Iraq