Abstract
New model of the inhomogeneous layer element is presented for the analysis on a general inhomogeneous elastic layer. Stacking of the new layer elements simulates well a real inhomogeneous layer with small number of the elements. The analytical formulation is made by the transfer matrix method against to the stacked multi-layer structure. Each the stacking layer element is inhomogeneous. Its mechanical impedance varies in linear form with layer thickness.Applicability of such the new model is inspected with the comparison of the closed form solutions for a linear inhomogeneous layer, with conventional approximate solutions formulated by piling up of many homogeneous layers.
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