A Nonsingular  BEM For  Fracture  Modeling
Using  Conforming  Elements

J.D. Richardson; T.A. Cruse

doi:10.2495/BT970021

A Nonsingular BEM For Fracture Modeling Using Conforming Elements

Price

Free (open access)

Transaction

WIT Transactions on Modelling and Simulation

Volume

Pages

Published

1997

Size

639 kb

Paper DOI

10.2495/BT970021

WIT Press

Author(s)

J.D. Richardson & T.A. Cruse

Abstract

A nonsingular form of the traction-BIE is extended to crack surfaces to form the basis for a nonsingular BEM algorithm suitable for single-domain fracture modeling. The nonsingular conforming BEM uses a piece-wise C*'" interpolation for the displacement discontinuity on the crack surface. The asymptotic behavior of the regularized displace- ment discontinuity corresponding to the exact solution is maintained in the approximate regularized density by relaxing the regularizing solution on all elements sharing the col- location point. In this fashion, all integrals computed in the BEM are weakly singular and are suitable for low-order integration since the approximate regularized density is C^'* in a neighborhood of the source point. The conforming BEM algorithm using regu- larized integrals over the entire crack surface is also well suited for m

Keywords

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Code

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