Stress Field Analysis on Anti-Plane Orthotropic Bi-Materials of Interface End

Orthotropic bi-materials anti-plane interface end of flat lap was studied by constructing new stress function and using composite complex function method of material fr acture.The expression of stress fields,displacements fields and stress intensity factor around flat lap interface end,are derived by solving a class of generalize d bi-harmonic equations.The result shows:this type of problems has one singularity,the stress fields has no singularity when two materials constant ratio #>0,the stress field has power singularity,and singularity index trends to -1/2 as # increases.FEM analysis was done to verify correction of the derived equation.