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A coupled hygrothermal cohesive-layer constitutive model for simulating debond growth
The objective of this paper is to model the synergistic bond degradation mechanisms that might occur at the interface betweem Fibre Reinforced Polymer and concrete due to interactions between stress, cohesive damage, and penetrant diffusion. For this purpose, a two-dimensional cohesive layer constitutive model with a prescribed traction-separation law is constructed from basic priciples of continuum mechanics and thermodynamics, taking into account non-Fickian hygrothermal effects that are likely to occur within the cohesive layer. Implementation of the model in a test-bed finite element code was carried out and code verification was performed. Benchmark comparisons of finite element prediction of critical load with analytical results for a double cantilever beam (DCB) specimen resulted in good egreement. Numerical simulation of a wedge-test involving debond growth caused by synergistic interactions between local stress and diffusing moisture was also presented to demonstrate the ability of the cohesive-layer model to simulate environmental cracking.
A coupled hygrothermal cohesive-layer constitutive model for simulating debond growth
The objective of this paper is to model the synergistic bond degradation mechanisms that might occur at the interface betweem Fibre Reinforced Polymer and concrete due to interactions between stress, cohesive damage, and penetrant diffusion. For this purpose, a two-dimensional cohesive layer constitutive model with a prescribed traction-separation law is constructed from basic priciples of continuum mechanics and thermodynamics, taking into account non-Fickian hygrothermal effects that are likely to occur within the cohesive layer. Implementation of the model in a test-bed finite element code was carried out and code verification was performed. Benchmark comparisons of finite element prediction of critical load with analytical results for a double cantilever beam (DCB) specimen resulted in good egreement. Numerical simulation of a wedge-test involving debond growth caused by synergistic interactions between local stress and diffusing moisture was also presented to demonstrate the ability of the cohesive-layer model to simulate environmental cracking.
A coupled hygrothermal cohesive-layer constitutive model for simulating debond growth
Ein konstitutives Modell einer gekoppelten, hygrothermal belasteten Kohäsionsschicht für die Simulierung einer zunehmenden Klebeschichtablösung
Roy, Samit (author) / Shiue, Fuh-Wen (author)
Polymers and Polymer Composites ; 11 ; 633-648
2003
16 Seiten, 14 Bilder, 2 Tabellen, 13 Quellen
Article (Journal)
English
A Coupled Hygrothermal Cohesive-Layer Constitutive Model for Simulating Debond Growth
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