Boundary Element Applications To Polymer Fracture
Author(s)
S. Syngellakis & J. Wu
Abstract
Boundary element applications to polymer
fracture
S. Syngellakis & J . Wu
School of Engineering Sciences, University of Southampton, U. K.
Abstract
This paper reports on applications of the boundary element method (BEM) to
polymer fracture. Both Laplace transformed and time domain two-dimensional
analyses, based on linear viscoelasticity, are developed and applied to centrecracked
plates under tension in order to assess their relative accuracy and
efficiency. The time dependence of stress intensity factors is assessed for various
viscoelastic models as well as loading conditions. Various approaches for direct
assessment of the energy release rate are proposed; its representation through
path-independent J-type integrals is also explored. Systematic procedures for Jintegral
evaluation are developed requiring the derivation of additional boundary
integral equations for the displacement gradient distributions in the solid domain.
The BEM formulation is extended to the determination of the energy d
Keywords
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