Evaluation of polymer fracture parameters by the boundary element method
Evaluation of polymer fracture parameters by the boundary element method
The boundary element method (BEM) for two-dimensional linear viscoelasticity is applied to polymer fracture. The time-dependence of stress intensity factors is assessed for various viscoelastic models as well as loading and support conditions. Various representations of the energy release rate under isothermal conditions are adopted. Additional boundary integral equations for the displacement gradient in the domain are linked to algorithms for the evaluation of path-independent J-integrals. The consistency of BEM predictions and their good agreement with other analytical results confirms BEM as a valid modelling tool for viscoelastic fracture characterisation and failure assessment under complex geometric and loading conditions.
viscoelasticity, energy release rate, j-integral, boundary element method
1251-1265
Syngellakis, Stavros
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Wu, Jiangwei
9270fdbc-6ea5-4b0e-bc56-5188c5a41a85
March 2008
Syngellakis, Stavros
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Wu, Jiangwei
9270fdbc-6ea5-4b0e-bc56-5188c5a41a85
Syngellakis, Stavros and Wu, Jiangwei
(2008)
Evaluation of polymer fracture parameters by the boundary element method.
Engineering Fracture Mechanics, 75 (5), .
(doi:10.1016/j.engfracmech.2007.04.009).
Abstract
The boundary element method (BEM) for two-dimensional linear viscoelasticity is applied to polymer fracture. The time-dependence of stress intensity factors is assessed for various viscoelastic models as well as loading and support conditions. Various representations of the energy release rate under isothermal conditions are adopted. Additional boundary integral equations for the displacement gradient in the domain are linked to algorithms for the evaluation of path-independent J-integrals. The consistency of BEM predictions and their good agreement with other analytical results confirms BEM as a valid modelling tool for viscoelastic fracture characterisation and failure assessment under complex geometric and loading conditions.
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e-pub ahead of print date: 18 April 2007
Published date: March 2008
Keywords:
viscoelasticity, energy release rate, j-integral, boundary element method
Identifiers
Local EPrints ID: 50124
URI: http://eprints.soton.ac.uk/id/eprint/50124
ISSN: 0013-7944
PURE UUID: 720a4487-76ce-43c6-8111-e85b566d04d1
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Date deposited: 29 Jan 2008
Last modified: 15 Mar 2024 10:03
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Author:
Stavros Syngellakis
Author:
Jiangwei Wu
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