Frequency response of cylindrical shells partially submerged or filled with liquid

✍ Scribed by P.B. Gonçalves; R.C. Batista

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 558 KB
• Volume: 113
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1016/s0022-460x(87)81340-8

✦ Synopsis

A theoretical analysis for the free vibration of simply supported vertical cylindrical shells partially filled with or submerged in a fluid has been developed. The Rayleigh-Ritz technique is used to obtain an approximate solution which coincides withthe exact solution for the cases of an empty shell or a shell completely in contact with fluid. The vibrations of the shell are examined by using the Sanders shell theory. The fluid is taken as non-viscous and compressible and the coupling betweenthe deformable shell and this acoustic medium is taken into account. Solutions are presented to show the effect of a variable height of fluid on the shell natural frequencies. The effects of shell geometric parameters on the frequencies are also investigated. The analytical solution is compared with available test results. Good agreement is shown between test results found in the literature and predicted natural frequencies. The procedure appears well adapted to preliminary optimization studies of partially submerged or filled shells and can give quick solutions for problems where resonant conditions are a concern.