On natural frequencies of transversally isotropic circular plates

Abstract

Impact of material properties of transversely isotropic circular plates on its natural frequencies is discussed in the present paper. Two refined theories of plates are used to analyze the free vibration behavior of homogeneous plates. Both theories take into account normal and rotary inertias. Fundamental frequencies for plates with radial inhomogeneity are obtained with the help of finite element package Comsol Multiphysics 5.0. It is shown that the inhomogeneity of the plate have a profound impact on the first (lowest) frequency of the plate while the plate orthotropic influences more on the second and higher vibration modes. Refs 2. Figs 1. Tables 1.