Plotting Lamb waves dispersion curves of an aluminum plate by the Semi-Analytical Finite Element (SAFE) method and comparison with analytical curves

It is well known that the propagation of Lamb waves in elastic solid medias depends on frequency and material properties, but it does not depend direction isotropic gives rise to two basic types modes, symmetric antisymmetric ones. This paper presents an application semi-analytical finite element (SAFE) method aluminum plate thickness e = 2mm . The main goal this make a quantitative evaluation SAFE by carrying out following tasks: a) calculation dispersion curves ( wavenumber , phase velocity group b) relative error validation proposed algorithm, c) comparison between obtained those Bisection method. should be noted here our study restricted propagative modes.