The hydrodynamic responses of a semi-submersible platform are driven by its mass properties and geometric parameters, e.g. column size, spacing, draft and pontoon size. The mooring system also influences the platform responses. Heave plates added to the base of each column have been proposed to enhanced stability of semi-submersible platforms, particularly in the lower payload range. Optimization of a platform typically involves a compromise among a large number of factors including the structural weight, vertical, horizontal motion and rotations in operating and extreme sea-states, airgap, mooring size, etc. Optimization methods are reviewed. The complexity of the problem leads to the choice of a genetic algorithm presented herein. To allow systematic platform optimization assuming primary project parameters are given, i.e. payload, waterdepth, environmental conditions. A simplified hydrodynamic model is developed to capture the parametric sensitivity of the platform responses to primary design parameters.
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ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
June 10–15, 2007
San Diego, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
Volume 1: Offshore Technology; Special Symposium on Ocean Measurements and Their Influence on Design
ISBN:
0-7918-4267-3
PROCEEDINGS PAPER
Parametric Optimization of a Semi-Submersible Platform With Heave Plates
Alexia Aubault,
Alexia Aubault
Marine Innovation & Technology, Berkeley, CA
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Christian Cermelli,
Christian Cermelli
Marine Innovation & Technology, Berkeley, CA
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Dominique Roddier
Dominique Roddier
Marine Innovation & Technology, Berkeley, CA
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Alexia Aubault
Marine Innovation & Technology, Berkeley, CA
Christian Cermelli
Marine Innovation & Technology, Berkeley, CA
Dominique Roddier
Marine Innovation & Technology, Berkeley, CA
Paper No:
OMAE2007-29391, pp. 471-478; 8 pages
Published Online:
May 20, 2009
Citation
Aubault, A, Cermelli, C, & Roddier, D. "Parametric Optimization of a Semi-Submersible Platform With Heave Plates." Proceedings of the ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. Volume 1: Offshore Technology; Special Symposium on Ocean Measurements and Their Influence on Design. San Diego, California, USA. June 10–15, 2007. pp. 471-478. ASME. https://doi.org/10.1115/OMAE2007-29391
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