ANALYSIS OF INTER-LAMINAR STRESSES FOR COMPOSITE LAMINATED PLATE WITH INTERFACIAL DAMAGE

A constitutive model for composite laminated plates with the damage effect of the intra-layers and inter-laminar interface is presented.The model is based on the general six-degrees- of-freedom plate theory,the discontinuity of displacement on the interfaces are depicted by three shape functions,which are formulated according to solutions satisfying three equilibrium equa- tions.By using the variation principle,the three-dimensional non-linear equilibrium differential equations of the laminated plates with two different damage models are derived.Then,consid- ering a simply supported laminated plate with damage,an analytical solution is presented using finite difference method to obtain the inter-laminar stresses.