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An alternative approach to weight function evaluation for an orthotropic crack
Authors:George T Sha

Chien-Tung Yang

Affiliation:

11623 Valley Brook Place North, Carmel, Indiana 46033, USA

National College of Marine Science and Technology, Keelung, Taiwan

Abstract:The use of the analytically decoupled near-tip displacement solutions as an alternative approach, is presented in this paper for the efficient finite element evaluation of the decoupled weight functions for an orthotropic 2-D crack. This alternative approach has been validated by directly comparing the prior weight function results with a symmetric mesh approach in the crack-tip neighborhood, and indirectly by comparing the calculated stress intensity factors (KI(II)) values using the computed weight functions with available KI(II) solutions of the 2-D mixed mode orthotropic cracks. In addition, this approach with analytically decoupled near-tip displacement solutions for calculating weight functions at all locations, can facilitate further extension of weight function evaluations to a more general 2-D anisotropic crack.
Keywords:
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