Grygoryev S. The Numerical Analysis of Electroelastic Deformation of the Piezoceramic Spherical Bodies under Dynamic Excitation

The numeral method of decision of problems about axisymmetric vibrations of piezoceramic spherical bodies within the framework of linear theory of electro- elasticity at unstationary electric excitations is developed. The numeral research method of radial vibrations of piezoceramic radially polarized bodies of spherical form is developed. Vibrations of hollow ball with free spherical surfaces and ball with fixed internal and free external surfaces at suddenly applied constant potential difference and suddenly applied harmonical potential difference are analyzed and compared. The task about axisymmetric unstationary vibrations of piezoceramic bodies of spherical form with a cut on electrodes at electric excitations is numerally solved. There are considered hollow radially polarized balls with free external surfaces and different locations of axisymmetric cut on electrodes. The features of propagation of two-dimensional excitations are described, the analysis of the electromechanical state is done.