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| Testing Method Study of Nonlinearity Characteristic for Pentamarans Motion in Waves |
| CHEN Zhen |
| (State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract The nature of pentamarans motion time series in waves was studied by surrogate data method. The motion response of three types of pentamarans in different sea state was predicted theoretically and the surrogate data were generated by the modified Fourier transform. At 005 significant levels, the nature of pentamarans motion time series was identified based on the testing statistics. The results indicate that the nature of motion response system does not change while four sponsons are arranged at the front and after side of the main hull body, and the surrogate data method can distinguish the system nature of pentamarans motion in random waves and also be fit for the identification of motion and wave load response system of ship and offshore structures.
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Received: 18 March 2011
Published: 30 March 2012
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| [2] |
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