The stress intensities of three-dimensional corner singularities in a laminated composite

The stress intensity of three-dimensional corner singularity is computed for the tip of a transverse crack terminating on the free surface in a laminated composite. Firstly, stress singularity is calculated via finite element method applied for the angular domain. Then the two-state M-integral is employed, in conjunction with eigenfunction expansion, for computing the stress intensity of the stress singularity. The numerical example demonstrates the effectiveness of the proposed computational scheme.