Investigation of natural vibrations of thin-walled structures interacting with fluid

The problem of studying the dynamics elements hydro-technical structures interacting with fluid is considered in article. On basis Lagrange’s variational principles, basic equations are obtained that characterize complex, multiply connected structurally non-homogeneous shell systems flowing fluid. Dynamic a cylindrical obtained. To determine pressure on surface, boundary value based laws hydroelasticity was used. A software package developed for dynamic characteristics structures, as well programs composite structure using orthogonal sweep method. determined different levels water filling.