A thin two-phase foils deformed by an interfacial dislocation in anisotropic elasticity

The numerical resolution, in the case of anisotropic elasticity, of the problem of a dislocation parallel and near to the two free surfaces of a thin bicrystal is studied. This case was obtained while making the period of a network of misfit dislocations much greater than the thickness of the two foils. As a result, in the vicinity of the dislocation, the limiting boundary conditions will be close to that of Volterra translation dislocation. The elastic fields of displacement and stress are calculated for various orientations of the Burgers vector. Before this calculation, accuracy of the results was tested by comparing the interfacial relative displacement obtained from this one to the results of the analytical expression describing the same displacement. The thin bicrystal Al/Al2Cu, that was the object of several investigations, is treated as an example. The results obtained are compared to those obtained in isotropic elasticity. 6 refs.