ELASTIC WAVE TRANSMISSION THROUGH PLATE BEAM JUNCTIONS

This analysis is concerned with the calculation of the wave transmission coefficients of structural joints. A generic plate/beam junction is considered which consists of an arbitrary number of plates which are either coupled through a beam or directly coupled along a line. Shear deformation, rotary inertia and warping are included in the analysis of the beam, and due allowance is made for offsets between the plate attachment lines and the shear axis of the beam. The equations of motion of the junction are formulated by firstly deriving a "wave dynamic stiffness matrix" for each plate and then applying the appropriate equilibrium and compatibility conditions. The analysis is illustrated by application to a number of example junctions. © 1990.