WIT Press


A Variable Stiffness Plasticity Dual Boundary Element Formulation For Fracture Mechanics

Price

Free (open access)

Paper DOI

10.2495/BE950271

Volume

10

Pages

10

Published

1995

Size

667 kb

Author(s)

M.H. Aliabadi, S. Corradi & M. Marchetti

Abstract

- A new approach is outlined for dual BEM formulation for elastoplasticity, which exploits certain features of the constitutive relationships involved. By the use of the Von Mises yield criterion with strain hardening, the unknown non-linear terms, as the initial strains, are now defined in function of the scalar flow factors. Dual BEM variable stiffness formulation, based on the utilisation of the traction equation on one of the crack surfaces and the displacement equation on the other, is presented for the solution of general elastoplastic fracture mechanics problems. The validity of the present formulation has been compared with the well known iterative dual BEM elastoplastic approach

Keywords