Crack propagation prediction of CFRP retrofitted steel plates with different degrees of damage using BEM |
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| Affiliation: | 1. Department of Building Engineering, Tongji University, Siping Road, Shanghai 200092, China;2. Department of Civil Engineering, Monash University, Wellington Road, Clayton, VIC 3800, Australia;3. School of Applied Sciences and Engineering, Monash University, Northways Road, Churchill, VIC 3842, Australia;1. The Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China;2. Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia;3. Department of Civil Engineering, Xi׳an University of Architecture and Technology, China;1. Structural Engineering Research Laboratory, Swiss Federal Laboratories for Materials Science and Technology (Empa), Switzerland;2. Resilient Steel Structures Laboratory, Swiss Federal Institute of Technology Lausanne (EPFL), Switzerland;3. School of Civil Engineering, University of Tehran, Iran;1. School of Civil, Environmental and Mining Engineering, Faculty of Engineering, Computing and Mathematics, The University of Western Australia, Australia;2. Department of Structural Engineering, Faculty of Engineering, Tanta University, Tanta, Egypt;3. School of Civil Engineering and Built Environment, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia;1. Key Laboratory of Performance Evolution and Control for Engineering Structures (Tongji University), Ministry of Education, Shanghai 200092, China;2. Department of Structural Engineering, Tongji University, No. 1239 Siping Road, Shanghai 200092, China;3. Department of Civil Engineering, Monash University, Wellington Road, Clayton, VIC 3800, Australia |
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| Abstract: | Although carbon fibre reinforced polymer (CFRP) materials have proven effective in strengthening steel structures especially when used to improve fatigue behaviour, further study is required to investigate their effectiveness when applied at different stages of crack propagation in steel elements. This paper presents a numerical study on CFRP retrofitted steel plates with different degrees of damage using the boundary element method (BEM). The numerical results compared well with the experimental data, which demonstrated that the BEM is reliable for crack propagation analysis of CFRP laminate retrofitted steel plates. Finally, a parametric analysis was conducted to investigate the influence of bond length, bond width, CFRP stiffness and adhesive shear modulus on stress intensity factor (SIF) values. |
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| Keywords: | Boundary element method CFRP laminate Fatigue Degree of damage Steel plate Stress intensity factor |
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