Nonlinear Model for Sub- and Superharmonic Motions of a MDOF Moored Structure, Part 2—Sensitivity Analysis and Comparison-Reference-Cited by-同舟云学术

Nonlinear Model for Sub- and Superharmonic Motions of a MDOF Moored Structure, Part 2—Sensitivity Analysis and Comparison

Published:2005-03-24 Issue:4 Volume:127 Page:291-299
ISSN:0892-7219
Container-title:Journal of Offshore Mechanics and Arctic Engineering
language:en
Short-container-title:

Author:

Yim S. C. S.¹,Raman S.²,Palo P. A.³

Affiliation:

1. Coastal and Ocean Engineering Program, Department of Civil Engineering, Oregon State University, Corvallis, OR 97331

2. Skillings-Connolly, Inc., 5016 Lacey Boulevard S.E., Lacey, WA 98503

3. Naval Facilities Engineering Service Center, 1100 23rd Avenue, Port Hueneme, CA 93043

Abstract

The nonlinear R-MI/SO system identification procedure and the parameters of the MDOF system identified in Part 1 are examined in detail in this paper. A parametric study is conducted and the results are presented on the sensitivity of the system parameters for two key nonlinear responses—subharmonic and superharmonic resonances. The parameters are compared to determine the appropriateness of using a single set of system parameters for both response regions. A detailed comparison of the MDOF and the corresponding SDOF system results is performed. The knowledge gained from the SDOF and MDOF studies on the applicability of the R-MISO technique for the system identification of MDOF submerged moored structures is discussed. The results show that the MDOF extension of the R-MI/SO nonlinear system identification technique works well; the resulting system parameters are relatively constant and can be applied to the both the sub- and superharmonic regions.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Link

http://asmedigitalcollection.asme.org/offshoremechanics/article-pdf/127/4/291/5930811/291_1.pdf

Reference9 articles.

1. Sub- and Super-Harmonic Responses of a MDOF Moored Structure, Part 1—Nonlinear System Identification;Raman;ASME J. Offshore Mech. Arct. Eng.

2. Narayanan, S. , 1999, “Experimental Analysis of a Nonlinear Moored Structure,” Ph.D. dissertation, Oregon State University.

3. Yim, S. C. S., Myrum, M. A., Gottileb, O., Lin, H., and Shih, I-M., 1993, “Summary and Preliminary Analysis of Nonlinear Oscillations in a Submerged Mooring System Experiment,” Ocean Engineering Report No. OE-93-03, Office of Naval Research.

4. Modeling and Identification of a Nonlinear SDOF Moored Structure, Part I, Hydrodynamic Models and Algorithm;Narayanan;ASME J. Offshore Mech. Arct. Eng.