Mixed-mode fracture mechanics parameters of elliptical interface cracks in anisotropic bimaterials

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20000279

Xue, Y; Qu, J

Two-dimensional interface cracks in anisotropic bimaterials have been studied extensively in the literature. However, solutions to three-dimensional interface cracks in anisotropic bimaterials are not available, except for circular (penny-shaped) cracks. In this paper, an elliptical crack on the interface between two anisotropic elastic half-spaces is considered. A formal solution is obtained by using the Stroh method in two dimensional elasticity in conjunction with the Fourier transform method. To illustrate the solution procedure, an elliptical delamination in a cross-ply composite is solved. Numerical results of the stress intensity factors and energy release rate along the crack front are obtained terms of the interfacial matrix M. It is found that the fields near the crack front are often in mixed mode, due to material anisotropy and the three dimensional nature of the crack front.

• Research Organization: Georgia Inst. of Tech., Atlanta, GA (US)
• OSTI ID: 20000279
• Report Number(s): CONF-9805206--; ISBN 0-8031-2602-6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
CRACK PROPAGATION
FRACTURE MECHANICS
STRESS INTENSITY FACTORS
THREE-DIMENSIONAL CALCULATIONS