Subinterface crack in dissimilar orthotropic materials

• Published in: International journal of solids and structures Vol. 32; no. 19; pp. 2873 - 2889
• Main Authors: Sung, J.C., Liou, J.Y.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.10.1995; Elsevier Science
• Subjects: Exact sciences and technology; Fracture mechanics (crack, fatigue, damage...); Fracture mechanics, fatigue and cracks; Fundamental areas of phenomenology (including applications); Physics; Solid mechanics; Structural and continuum mechanics; Cracks; Singularity; Stress intensity factors; Integral equations; Numerical methods; Layered materials; Solid-solid interfaces; Principal stress; Subsurface; Orthotropic material
• ISSN: 0020-7683; 1879-2146
• DOI: 10.1016/0020-7683(94)00256-V

A subinterface crack in dissimilar orthotropic materials is considered. The principal axes of one of the materials (say material no. 2 which contains the crack) are aligned along the coordinate axes while the other material's principal axes (say material no. 1) can have an arbitrary angle γ relative to the interface boundary. The effects of material no. 1 on the behavior of material no. 2 are completely through six generalized Dundurs' constants that are functions of γ. When γ = 0 or when the material constant δ(1) of material no. 1 is equal to one, two of the six constants vanish and only four left have to be considered. A peculiar phenomenon is observed for δ(1) = 1, i.e. when the material constant δ(1) of material no. 1 is equal to one the effect of the alignments of material no. 1 on the behavior of material no. 2 is indifferent. Several features of the stress intensity factors for crack faces subjected to self-equilibrating loadings are further investigated without resorting to solving the equations. Some numerical results for crack faces subjected to uniform pressure or shear loadings are also given.