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| PARALLEL SIMULATION OF FRP-CONCRETE DEBONDING FAILURE PROCESS |
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Abstract The interfacial bonding and anti-tensile behavior between FRP and concrete is the key problem for the application of FRP to strengthen concrete structures. In this paper, the 3D Parallel Realistic Failure Process Analysis (RFPA3D-parallel) is employed to investigate the bonding behavior in FRP-concrete interface based on the single shear testing results on FRP-concrete in laboratory. Numerical simulations visually reproduce the complete three-dimensional debonding process and characteristics of FRP bonded to concrete, which is a progressive process induced by meso-scopic cracks initiation and growth and macroscopic fractures form. The damage of FRP-concrete structures under external loading can be founded by monitoring the acoustic emission induced by microcracking in FRP-concrete. Based on the simulated stress evolution and deformation distribution along the length FRP sheet, the deformation and debonding failure can thus be divided into four stages, i.e., elastic, elastic-softening, elastic-softening-debonded and softening-debonded stage. The numerical approach in this study provides a useful tool for enhancing our understanding of cracking and debonding failure process and mechanism of FRP-concrete and our ability to predict mechanical performance and reliability of these FRP sheet bonded to concrete structures.
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Received: 17 December 2009
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| [1] |
. Cluster Analysis of Acoustic Emission Signals of 2D-C/SiC under Tensile Loading[J]. , 2014, 35(2): 109-114. |
| [2] |
. INFLUENCE OF SPAN ON THE RESPONSE AND DAMAGE OF COMPOSITE LAMINATE UNDER LOW-VELOCITY IMPACT INDUCED BY LARGE-MASS AND INTERMEDIATE-MASS[J]. , 2013, 34(6): 557-561. |
| [3] |
. A MODIFIED LOW CYCLE FATIGUE DAMAGE MODEL FOR METALS[J]. , 2013, 34(6): 571-578. |
| [4] |
. THE INERTIA EFFECT OF THE COMPRESSIBLE CONCRETE MATERIAL TESTS IN SHPB SYSTEM[J]. , 2013, 34(5): 515-520. |
| [5] |
. Thermal Fatigue Reliability Analysis for Space Structures Composed of Thin-walled Tube[J]. , 2013, 34(4): 388-395. |
| [6] |
. The description of elasto-damage to fracture process of structures using component assembling model and comparison with cohesive zone model[J]. , 2013, 34(3): 241-246. |
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2011, Vol. 32 
