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Nonlinear identification and input-output representation of the modal dynamics of marine slender structures

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National Technical University of Athens   

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Nonlinear identification and input-output representation of the modal dynamics of marine slender structures (EN)
Chatjigeorgiou, IK (EN)
Xiros, NI (EN)
journalArticle (EN)
2014-03-01T01:26:44Z
2007 (EN)
The present work treats the problem of the dynamic behavior of a vertical slender structure subject to combined axial and transverse motions. The solution method is based on a Galerkin-type semi-analytical formulation. The responses to sinusoidal monochromatic excitation are assessed with respect to the significance of each mode and their spectral content. As a result, a reduced, yet nonlinear, lumped model for each one of the significant modes of the structure is generated. The parameters of these fixed-structure models can be determined systematically by two methods relying on the spectral analysis of the numerically calculated modal responses of the structure. The resulting models constitute an explicit input-output relationship between the imposed motions and the modes of the structure, useful for stability analysis, design and control. Copyright © 2007 by ASME. (EN)
Engineering, Ocean (EN)
Engineering, Mechanical (EN)
fixed structure (EN)
modeling (EN)
Modal analysis (EN)
Modal dynamics (EN)
Numerical methods (EN)
Transverse motions (EN)
stability analysis (EN)
spectral analysis (EN)
Input Output (EN)
Marine slender structures (EN)
Galerkin methods (EN)
Axial motions (EN)
Dynamics (EN)
Ocean structures (EN)
Spectrum analysis (EN)
structural response (EN)
Mathematical models (EN)
Galerkin method (EN)
dynamic response (EN)
Nonlinear Identification (EN)
Journal of Offshore Mechanics and Arctic Engineering (EN)
English
ASME-AMER SOC MECHANICAL ENG (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
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