STRESS SINGULARITY IN COMPOSITE LAMINATES BY FINITE-ELEMENT METHOD

A compact finite element formulation based on singularity transformation is presented and is used to analyze the stress singularity at the boundary-layer of an interface between adjacent layers in a laminated composite. The composite is subjected to uniform axial extension in the plane of the layers. For illustration, results from few elements are shown to demonstrate the accuracy and efficiency of the present approach. Excellent agreement between the present results and the analytical solutions is obtained.