Cho, Dae Seung and Kim, Byung Hee and Vladimir, Nikola and Choi, Tae Muk (2015) Natural vibration analysis of rectangular bottom plate structures in contact with fluid. = Natural vibration analysis of rectangular bottom plate structures in contact with fluid. Ocean engineering, 103. pp. 171-179. ISSN 0029-8018. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q1 (2015). Točan broj autora: 4.
Full text not available from this repository.Abstract
A simple and effective procedure for the natural vibration analysis of rectangular bottom plate structures in contact with fluid is presented. Structural part of the coupled hydroelastic problem covers thin and thick rectangular plates and stiffened panels with different framing types. The eigenvalue problem is formulated using Lagrange's equation of motion and taking into account potential and kinetic energies of a plate structure and fluid kinetic energy, respectively. Natural frequencies and modes are obtained applying the assumed mode method using the characteristic polynomials of a Timoshenko beam. Potential flow theory assumptions are adopted for the fluid and the effect of free surface waves is ignored. From the boundary conditions for the fluid and structure the fluid velocity potential is derived and it is utilized for the calculation of added mass using the assumed modes. The developed theoretical model is verified with several numerical examples dealing with the natural vibration of bare plates and stiffened panels in contact with different fluid domains. A comparison of the results with those obtained by a general purpose FEA software showed very good agreement, especially for the lowest natural frequencies that are actually most relevant for the structural design from the viewpoint of vibration.
| Item Type: | Article (["eprint_fieldopt_article_type_article" not defined]) |
|---|---|
| Keywords (Croatian): | Bottom plate, Mindlin theory, Stiffened panel, Vibration analysis, Potential flow, Added mass |
| Subjects: | TECHNICAL SCIENCE > Mechanical Engineering |
| Divisions: | 600 Department of Naval Engineering and Marine Technology > 650 Chair of Marine Machinery and System Design |
| Indexed in Web of Science: | Yes |
| Indexed in Current Contents: | Yes |
| Quartiles: | Q1 (2015) |
| Date Deposited: | 23 May 2016 09:05 |
| Last Modified: | 27 Oct 2017 10:52 |
| URI: | http://repozitorij.fsb.hr/id/eprint/5883 |
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