WIT Press


Three-dimensional Dynamic Weight Functions For Mixed-mode Crack Problems

Price

Free (open access)

Paper DOI

10.2495/BE960411

Volume

14

Pages

10

Published

1996

Size

619 kb

Author(s)

P.H. Wen, M.H. Aliabadf & D.P. Rooke

Abstract

An indirect boundary element method is developed to analyse three-dimensional elastodynamic fracture mechanics mixed-mode problems. A set of boundary integral equations to determine the fictitious loads and displace- ment discontinuities are then derived in Laplace transform domain. The stress intensity factors A^(p) (( = 7,77,777) are evaluated by both the equivalent stress method and the weight function method for dynamic loading. The stress intensity factors in the time domain K^(r) are obtained from the Laplace trans- form solution by the Durbin inversion method. Results for mixed-mode dynamic stress intensity factors are presented for a square crack in an infinite body, and for a rectangular and a circular crack in a square bar. 1 In

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