Interface cracks in anisotropic dissimilar materials : An analytic solution

摘要: Abstract Based on linear elastic fracture mechanics, analytic solutions are given for displacement and stress fields of in-plane deformation two anisotropic half-planes, forming a composite bimaterial, with an interface crack, assuming strictly two-dimensional problems; this requires suitable orientation the material symmetry axes to ensure decoupling anti-plane mode from ones. It is shown that field equations fully characterized in terms four dimensionless parameters, these parameters expressed twelve involved constants, six each half-plane. Analytic models: (1) open-crack model, involving oscillatory square-root singularities at crack tips ; (2) Comninou model which allows possible small contact zones close tips. expressions obtained opening displacement, size zone, total force transmitted across field. The results discussed related those isotropic bimaterials, by Gautesen Dundurs.