Modeling wave propagation in annular sector plates using spectral strip method

A spectral strip method (SSM) in frequency domain was developed to analyze annular Levy-type plates subjected to impact loads. The dynamic formulation was developed for an annular sector plate with simple boundary conditions on radial edges and any boundary conditions on circular edges with constant and variable thickness. Using Bessel’s equations, modified Bessel’s equations, and separation of variation technique, the dynamic differential equation of annular sector plate in frequency domain is solved. Numerical results show the accuracy of this method in comparison to other numerical methods using less number of elements (strip).