Naslov
Buckling analysis of toroidal shell by Rayleigh-Ritz method

Autori
Senjanović, Ivo ; Alujević, Neven ; Ćatipović, Ivan ; Čakmak, Damjan ; Vladimir, Nikola ; Cho, Dae-Seung

Izvornik
ASME Journal of Pressure Vessel Technology (0094-9930) 141 (2019), 4; 041204, 14

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
toroidal shell ; external pressure ; buckling ; Rayleigh–Ritz method ; Fourier series

Sažetak
The energy approach is used to analyze the buckling stability of toroidal shells. A closed and an open toroidal shell, as well as a shell segment are considered. Linear strain energy and nonlinear strain energy due to a uniform external pressure are formulated. Variations of the in- surface and normal displacement components in the circumferential and meridional directions are assumed in the form of a double Fourier series. The eigenvalue problem for the determination of the critical pressure is formulated by the Rayleigh–Ritz method (RRM). The proposed procedure is evaluated by numerical examples: one for a closed and another one for a simply supported open toroidal shell. The obtained results are validated by a comparison with results obtained by the finite strip method (FSM) and the finite element method (FEM), which shows a very good agreement.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Strojarstvo

POVEZANOST RADA