Abstract
In this paper is considered behavior of the stress field around the tip of a crack that propagates dynamically along the interface between the two anisotropic materials. The emphasis is set on application and extension of the existing concept of the interfacial fracture mechanics to problem of a crack that propagates dynamically. The angular distribution of the stress is presented. The behavior of the oscillatory index, force resolution factor and energy factor in terms of the crack tip speed and ratio of materials' stiffnesses was studied. The oscillatory index value increases with increase of the crack propagating speed and it tends to infinity when the speed approaches the Rayleigh wave speed of the softer of the two materials. The force resolution factor strongly depends on the crack tip speed, but weakly on the stiffnesses ratio. The opposite is valid for the energy factor. In this work, the dynamic stress intensity factor was determined of the anisotropic bimaterial combination for several basic configurations. Result obtained in this paper can serve as a guide in materials mathematical modeling.
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