polymerjournals Chemistry, materials, technology
Polymers and Polymer Composites

COUPLED HYGROTHERMAL COHESIVE-LAYER CONSTITUTIVE MODEL FOR SIMULATING DEBOND GROWTH

August 1, 2003 By: Roy S; Shiue F-W Research article

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: 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.

Related reading

More journal reading and science coverage connected to this topic.