The Transfer Matrix of SH Wave and Its Application in Phononic Crystal

Using the boundary conditions,the SH wave transfer matrix is derived in multilayer dielectric system.The transfer matrix method is used to study the band gap and defect mode of the SH wave in 1D phononic crystal.The frequency and frequency width of band gap variation with the incidence angle and cycle thickness are obtained.The frequency and frequency width of defect mode variation with the angle of incidence and impurity thickness are obtained.