Mixed-Mode Debonding Behavior between CFRP Plates and Concrete under Fatigue Loading
Publication: Journal of Structural Engineering
Volume 147, Issue 5
Abstract
The cohesive zone model (CZM), which is capable of simulating the behavior of adhesively bonded joints subjected to static and fatigue loading, is widely accepted. In this study, fatigue peeling/shear of RC with externally bonded (EB) carbon fiber–reinforced polymer (CFRP) laminates under the mixed-mode implementation of the CZM is proposed. The procedure has been implemented in commercial software by programming the appropriate software-embedded subroutines. The main advantage of the proposed CZM is the use of coupled mixed-mode damage (shear-peeling), accounting for cumulative damage resulting from fatigue loading. Two-dimensional numerical simulations of the innovative double-lap-shear bonding test were performed by the proposed CZM. The excellent agreement between the simulated results and the experimental results are verified, and the good performance of the method as a predictive tool is demonstrated. Moreover, the peeling/shear propagation during loading can be effectively predicted.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The research work described in this paper was financially supported by the grants from the Natural Science Foundation of Jiangsu Province (No. BK20191441), National Natural Science Foundation of China (No. 51708485), the Jiangsu Planned Projects for Postdoctoral Research Funds (No. 1701191B), and the China Postdoctoral Science Foundation (No. 2017M611925). The authors gratefully acknowledge their support.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 5 • May 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Aug 19, 2020
Accepted: Jan 29, 2021
Published online: Mar 12, 2021
Published in print: May 1, 2021
Discussion open until: Aug 12, 2021
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