Cho, Dae Seung and Kim, Byung Hee and Kim, Jin Hyeong and Vladimir, Nikola and Choi, Tae Muk (2015) Application of the assumed mode method to the vibration analysis of rectangular plate structures in contact with fluid. = Application of the assumed mode method to the vibration analysis of rectangular plate structures in contact with fluid. In: 7th International Conference on Hydroelasticity in Marine Technology, 16-19.09.2015., Split, Hrvatska.
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777164.Application_of_the_assumed_mode.pdf - Published Version Jezik dokumenta:English Download (1MB) | Preview |
Abstract
This investigation is related to the natural vibration analysis of bottom and vertical plate structures in contact with fluid using the assumed mode method. The procedure can consider thick plates and stiffened panels, where the Mindlin theory is adopted for a plate and Timoshenko beam theory for the stiffeners. 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. 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. Based on the developed theoretical background, the in-house software is developed and applied to the vibration analyses of plates and stiffened panels in contact with fluid with different domain sizes and various sets of boundary conditions. Comparisons with FEM-BEM numerical results show high accuracy of the proposed procedure.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Keywords (Croatian): | bottom plate structures, vertical plate structures, vibration, potential flow, added mass, assumed mode method |
| Subjects: | TECHNICAL SCIENCE > Shipbuilding |
| Divisions: | 600 Department of Naval Engineering and Marine Technology > 650 Chair of Marine Machinery and System Design |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Date Deposited: | 23 May 2016 10:28 |
| Last Modified: | 27 Oct 2017 10:07 |
| URI: | http://repozitorij.fsb.hr/id/eprint/5903 |
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