Accession Number : ADP006595

Title :   Numerical Modelling of Mode I Linear Viscoelastic Fracture,

Corporate Author : BRUNEL UNIV UXBRIDGE (UNITED KINGDOM) INST OF COMPUTATIONAL MATHEMATICS

Personal Author(s) : Warby, M. K. ; Walton, J. R. ; Whiteman, J. R.

Report Date : MAR 1992

Pagination or Media Count : 9

Abstract : Numerical schemes, based on finite elements in space and finite differences in time, are outlined for modelling stationary and moving cracks in two-dimensional linear viscoelastic materials. The mathematical formulation involves a linear single time integral constitutive model for the viscoelastic behaviour, together with the inclusion of a Barenblatt failure zone in the vicinity of the crack tip. Crack propagation and subsequent motion is based upon a crack opening displacement criterion (COD).

Descriptors :   *CRACK PROPAGATION, *CRACKING(FRACTURING), *MATHEMATICAL MODELS, *VISCOELASTICITY, CRACKS, DISPLACEMENT, FAILURE, FORMULATIONS, INCLUSIONS, INTEGRALS, MATERIALS, MODELS, MOTION, OPENINGS, PROPAGATION, REGIONS, STATIONARY, TIME, TWO DIMENSIONAL.

Subject Categories : Mechanics
      Operations Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE