In this paper the authors focus on the ship hull structure strengths and fatigue analyses, in order to estimate the ship service life period at the initial design stage. The topic of the paper is divided in three-interlinked parts. The first part includes the method for the hull strength analysis, based on 3D/1D-FEM models, under equivalent quasi-static head wave loads. The second part presents the method for the ship hull dynamic response analysis, based on non-linear hydroelasticity theory with second order wave spectrum. The last part includes the fatigue analysis method for the initial ship hull structure, based on the long-term prediction ship dynamic response, the cumulative damage ratio and the design S-N material curves. The numerical analyses are carried out for a LPG carrier with independent cargo-tanks type A. Two significant load cases are considered: full and ballast. The numerical results outline the extreme wave loads and the ships initial service life evaluation.
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ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
June 15–20, 2008
Estoril, Portugal
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4819-7
PROCEEDINGS PAPER
Numerical Methods for Hull Structure Strength Analysis and Ships Service Life Evaluation, for a LPG Carrier
Leonard Domnisoru,
Leonard Domnisoru
“Lower Danube” University, Galati, Romania
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Dumitru Dragomir,
Dumitru Dragomir
“Lower Danube” University, Galati, Romania
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Alexandru Ioan
Alexandru Ioan
“Lower Danube” University, Galati, Romania
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Leonard Domnisoru
“Lower Danube” University, Galati, Romania
Dumitru Dragomir
“Lower Danube” University, Galati, Romania
Alexandru Ioan
“Lower Danube” University, Galati, Romania
Paper No:
OMAE2008-57602, pp. 509-518; 10 pages
Published Online:
July 27, 2009
Citation
Domnisoru, L, Dragomir, D, & Ioan, A. "Numerical Methods for Hull Structure Strength Analysis and Ships Service Life Evaluation, for a LPG Carrier." Proceedings of the ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. Volume 2: Structures, Safety and Reliability. Estoril, Portugal. June 15–20, 2008. pp. 509-518. ASME. https://doi.org/10.1115/OMAE2008-57602
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