NUMERICAL CALCULATION FOR ELASTIC WAVE GUIDE PROBLEMS OF LAYERED ORTHOTROPIC MEDIA

The numerical method of the elastic wave guide problem of composite materials is studied. The wave guide problem was introduced to a Hamiltonian system. In the Hamiltonian system, the displacement vectors and stress vectors were combined to be the whole state vectors, and the system was a hybrid system. In the hybrid system, the dynamic hybrid element was deduced, and a new semi-analysis finite element method in the Hamiltonian system was founded. This method is given in detail through the solution of layered media wave guide problems in a strip domain and its broad prospect is embodied.