I did it fracture analysis 3D plate with edge crack to find SIF for isotropic material, but when i try to do same for composite material than not happened. Than i used Elastic--Engineering constant material with equivalent E11, E1, E2, E3, Nu12,  Nu13, Nu23, G12,  G13, G23 but still analysis is not done and getting following error, Contour integral for k-factor and t-stress with xfem cannot be calculated with nonisotropic elasticity Abaqus/Standard Analysis exited with an error - Please see the message file for possible error messages if the file exists.