PLATE WAVE TRANSMISSION/REFLECTION AT GEOMETRIC OBSTRUCTIONS: MODEL STUDY

A theoretical study is presented for guided wave transmission/reflection in plates containing geometric obstructions such as joints and attachments. The problem considers semi‐infinite plates joined by a body of arbitrary geometry. Boundary integral equations methods are applied to determine motions in the joining body, incorporating impedance boundary conditions over surfaces of plate attachment derived from a canonical problem of tractions applied to the edge of a semi‐infinite plate. An example examines transmission/reflection at a 90 degree corner.