# COUPLED HYGROTHERMAL COHESIVE-LAYER CONSTITUTIVE MODEL FOR SIMULATING DEBOND GROWTH

> Title: COUPLED HYGROTHERMAL COHESIVE-LAYER CONSTITUTIVE MODEL FOR SIMULATING DEBOND GROWTH Page Range: p.633-648 Author(s): Roy S; Shiue F-W File size: 196K Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites Issue Year: ppc Volume: 11 Issue No:...

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Published: 2003-08-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: COUPLED HYGROTHERMAL COHESIVE-LAYER CONSTITUTIVE MODEL FOR SIMULATING DEBOND GROWTH**
 Page Range: p.633-648
 Author(s): Roy S; Shiue F-W
 File size: 196K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc11-8&JournalID=100110&JIP=) (subscribers only)
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 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 11
 Issue No: No. 8

**Abstract**
 In order to model the synergistic bond degradation mechanisms that may occur at the interface between a fibre-reinforced polymer and concrete, a two-dimensional cohesive layer constitutive model with a prescribed traction-separation law was constructed. It was formulated using the basic principles of continuum mechanics and thermodynamics, taking into account concentration-dependent and strain-dependent non-Fickian hygrothermal effects that are likely to occur within a 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 specimen were shown to be in good agreement. Numerical simulation of a wedge-test involving debond growth caused by synergistic interaction between local stress and diffusing moisture was also presented to demonstrate the ability of the cohesive layer model to simulate environmental cracking. 13 refs.

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