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TECHNICAL PAPERS

Parameter Identification of a Large Floating Body in Random Ocean Waves by Reverse MISO Method

[+] Author and Article Information
S. K. Bhattacharyya, R. Panneer Selvam

Department of Ocean Engineering, Indian Institute of Technology, Madras, India

J. Offshore Mech. Arct. Eng 125(2), 81-86 (Apr 16, 2003) (6 pages) doi:10.1115/1.1493201 History: Received June 01, 2001; Revised February 01, 2002; Online April 16, 2003
Copyright © 2003 by ASME
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References

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Figures

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Definition of six degrees of motion of a floating body
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Schematic view of a multi-point moored floating body
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Added mass and damping curves
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(a) PM spectrum (b) excitation force per unit wave amplitude and (c) force spectrum
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Time series of water surface elevation, excitation force and sway motion
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Magnitude and phase plots of A1
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Magnitude and phase plots of A2(=K)
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Estimated added mass and damping curves
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Coherence plots x1=x;x2=x3
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Estimated added mass and damping curves with noise (SNR=10dB) in the force time series
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Magnitude and phase plots of A2(=K) with noise (SNR=10dB) in the force time series
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Cumulative coherence plots with noise (SNR=10dB) in the force time series by Eq. (10) and Eq. (11) with segment size 512
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Estimated added mass and damping curves with noise (SNR=10dB) in the sway time series
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Magnitude and phase plots of A2(=K) with noise (SNR=10dB) in the sway time series

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