Propagation of energy in a system of joined elastic half-strips of different thickness

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Abstract Using a previously proposed method to allow for singularities of the solution at comer points of a compound elastic waveguide, which employs the generalized orthogonality property of normal modes, an analysis is presented of the frequency dependence of the energy reflection and transmission coefficients at the vertical joining line of the half-strips, and of the structure of the energy fluxes in its neighbourhood in the so-called energy capture range. In this situation there is a phenomenon of energy vortices partly overlapping the energy flux, leading to an increase in the energy reflection coefficient.