Kovalev Alexander Demyanovich RussiaSaratovSaratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83доцентirinakovaleva1406@gmail.com Author's articles Mathematical and Computer Modeling of Nonlinear Waves Dynamics in a Physically Nonlinear Elastic Cylindrical Shells with Viscous Incompressible Liquid inside Them