Hydroelasticity theory considering the second-order fluid forces induced by the coupling of first-order wave potentials is introduced briefly in this paper. Based on this theory, four types of multidirectional irregular wave samplings are introduced, the frequency steps Δω of the four samplings are 0.04, 0.04, 0.02 and 0.01 rad/s, and the corresponding numbers of wave components N are 17, 75, 147 and 285 respectively. The result of principal coordinates and displacements of a very large floating structure (VLFS) for the four types of sampling are presented and discussed. The influence of the sampling is analyzed. The conclusions show that the sampling of the multidirectional irregular waves influence the second-order hydroelastic response of the VLFS. The accuracy and the computer time of the calculating with sampling of frequency step Δω = 0.02 rad/s are acceptable.
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ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
May 31–June 5, 2009
Honolulu, Hawaii, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4344-4
PROCEEDINGS PAPER
Influence of Multidirectional Irregular Wave Sampling to Second-Order Hydroelastic Responses of VLFS
Xujun Chen,
Xujun Chen
PLA University of Science and Technology, Nanjing, Jiangsu, China; Norwegian University of Science and Technology, Trondheim, Norway
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Torgeir Moan,
Torgeir Moan
Norwegian University of Science and Technology, Trondheim, Norway
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Xuefeng Tang
Xuefeng Tang
PLA University of Science and Technology, Nanjing, Jiangsu, China
Search for other works by this author on:
Xujun Chen
PLA University of Science and Technology, Nanjing, Jiangsu, China; Norwegian University of Science and Technology, Trondheim, Norway
Torgeir Moan
Norwegian University of Science and Technology, Trondheim, Norway
Xuefeng Tang
PLA University of Science and Technology, Nanjing, Jiangsu, China
Paper No:
OMAE2009-79861, pp. 1463-1472; 10 pages
Published Online:
February 16, 2010
Citation
Chen, X, Moan, T, & Tang, X. "Influence of Multidirectional Irregular Wave Sampling to Second-Order Hydroelastic Responses of VLFS." Proceedings of the ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. Volume 4: Ocean Engineering; Ocean Renewable Energy; Ocean Space Utilization, Parts A and B. Honolulu, Hawaii, USA. May 31–June 5, 2009. pp. 1463-1472. ASME. https://doi.org/10.1115/OMAE2009-79861
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