Numerical BEM/FEM formulation applied to plane wave diffraction by elastic inclusion

We study the ultrasonic wave transmission and diffraction in homogeneous and isotropic medias. In this aim, we use a coupled numerical formulation by boundary and finite element methods (BEM/FEM). The domain concerning limited inclusion is treated by finite elements, the unlimited domain is handled by boundary elements method. The coupled formulation is validated using analytical solution. Stoneley interface mode and plane wave diffraction by cylinder are presented in this work.