Abstract
The transient elastodynamic full-field response and the dynamic stress intensity factor of a semi-infinite interface crack lying between dissimilar anisotropic media subjected to a dynamic body force are investigated. At t = 0, a concentrated antiplane dynamic point loading is suddenly applied at Medium 1. The total wave field is due to the effect of this point loading and the scattering of the incident wave by the interface crack. We introduce a linear coordinate transformation that can transform the anisotropic interface crack problem to the isotropic case. The relationship between the problem of anisotropic material and the corresponding isotropic problem is established for shear stresses and displacement in a Cartesian coordinate system. Exact transient closed-form solutions for stresses and stress intensity factors are obtained. Numerical results for the time history of stresses and stress intensity factors during the transient process are discussed in detail.
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