Senjanović, Ivo and Vladimir, Nikola and Tomić, Marko and Malenica, Šime (2011) A sophisticated beam model for hydroelastic analysis of Ultra Large Container Ships. = A sophisticated beam model for hydroelastic analysis of Ultra Large Container Ships. In: 1st International Conference of Maritime Technology and Engineering, MARTECH 2011, 10-12.05.2011., Lisbon; Portugal.
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a_sophisticated_beam_model_for_hydroelastic_analysis.pdf - Accepted Version Jezik dokumenta:English Download (2MB) | Preview |
Abstract
A numerical procedure for hydroelastic analysis of Ultra Large Container Ships (ULCS) which utilizes sophisticated beam model coupled with 3D BEM hydrodynamic model, has been summarized. Beside general description of the methodology for ship hydroelastic analysis and constitutive parts of the hydroelastic mathematical model, special attention is paid to several improvements of the beam structural model. The first one is related to derivation of finite element for coupled beam horizontal and torsional vibrations, with influence of shear on both bending and torsion. The second improvement includes contribution of transverse bulkheads to the hull torsional stiffness, based on theory of thin-walled girders and orthotropic plate theory, while the third one is related to an appropriate incorporating of the relatively short closed engine room segment into the beam model. The significance of theoretical considerations is confirmed within two numerical examples. The first example includes complete hydroelastic analysis of a 7800 TEU container ship, and in that particular case 1D FEM model is checked by correlation analysis with the vibration response of the fine 3D FEM model. The procedure related to the determination of the engine room effective stiffness is verified within the second numerical example, by 3D FEM analysis of ship-like pontoon. © 2011 Taylor & Francis Group, London.
| Item Type: | Conference or Workshop Item (Lecture) |
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| Keywords (Croatian): | 3D FEM model; Beam model; Container ships; Correlation analysis; Coupled beams; Effective stiffness; Engine rooms; FEM analysis; FEM models; Finite Element; General description; Hydro-elastic analysis; Hydrodynamic model; Hydroelastic; Numerical example; Numerical procedures; Structural models; Thin-walled girder; Torsional stiffness; Torsional vibration; Transverse bulkhead; Ultra large container ships; Vibration response; Finite element method; Hydroelasticity; Linear motors; Marine engineering; Mathematical models; Model structures; Orthotropic plates; Ships; Stiffness; Three dimensional |
| Subjects: | TECHNICAL SCIENCE |
| Divisions: | 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design 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 |
| Citations SCOPUS: | 0 (26.10.2017.) |
| Date Deposited: | 23 Apr 2015 12:12 |
| Last Modified: | 26 Oct 2017 12:21 |
| URI: | http://repozitorij.fsb.hr/id/eprint/3751 |
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