Dynamic problem of axisymmetric oscillations of cylindrical shells of variable thickness under the action non-stationary load

Yu. Meish, N. Arnauta
Abstract

Analyzing the publications in which the dynamic problems of cylindrical shells of non-uniform thickness under the action of various types of loading are considered, a conclusion can be drawn. that there are practically no works devoted to the dynamic behavior of heterogeneous cylindrical shells under non-stationary loads. In this work, the formulation of the dynamic problem of axisymmetric oscillations of a cylindrical shell of variable thickness under the action of non-stationary loading and the algorithm for solving the given problem are considered. In particular, the resulting system of differential equations is based on the theory of Tymoshenko-type shells, while constructing a numerical algorithm, the integro-interpolation method of constructing finite-difference schemes for spatial coordinates is used using Richardson approximations and an explicit difference scheme for time. An example of calculating the dynamic behavior of a variable thickness under non-stationary loading is considered and an analysis of numerous results is given

Keywords

cylindrical shells, change in thickness, theory of Tymoshenko-type shells, forced oscillations, numerical methods

Suggested citation
Meish, Yu., & Arnauta, N. (2023). Dynamic problem of axisymmetric oscillations of cylindrical shells of variable thickness under the action non-stationary load. Scientific Reports of the National University of Life and Environmental Sciences of Ukraine, 19(6). https://doi.org/10.31548/dopovidi6(106).2023.025
References

[1] Meish, V.F., Meish, Yu.A., & Kornienko, V.F. (2021). Dynamics of three-layer shells of different geometry with piecewise-homogeneous core under distributed loads. International Applied Mechanics, 57(6), 1-10.

[2] Lugovoi, P.Z., Meish, V.F., Meish, Yu.A., & Orlenko, S.P. (2020). Dynamic design of compound shell structures of revolution under nonstationary loads. International Applied Mechanics, 56(1), 1-9.

[3] Meysh, V.F., Meish, Y.A., & Arnauta, N.V. (2019). Numerical analysis of nonstationary vibrations of discretely reinforced multilayer shells of different geometry. International Applied Mechanics, 55(4), 1-8.

[4] Arnauta, N., & Roman, R. (2018). Use of numerical high-exactly algorithms for modeling dynamic demeanour of discretely substantiated five-layered cylindrical shells. Biological Resources and Nature Management, 10(5-6), 217-222. doi: 10.31548/bio2018.05.027

[5] Samarsky, A.A. (1977). Theory of difference schemes. Moscow: Nauka.

[6] Arnauta, N. (2021). A problem of non-linear deformation of five-layer conical shells with allowance for discrete ribs. Scientific Reports of NULES of Ukraine, 6(94). doi: 10.31548/dopovidi2021.06.016.