This paper is concerned with the identification analysis of structural damage detection on the unit-linked floating structure model based on the fluid-coupled free vibration equation and filtering theory. The problem of structural damage detection is formulated as an inverse problem. The formulated inverse problem is analyzed under the consideration of stochastic properties on the responses of the system. In this study, two kinds of filtering algorithm, namely, the extended Kalman filter and the new filtering algorithm based on the projection filter, are employed as the analytical methods of inverse problem. The location and grade of connector with the assumed damage for the unit-linked floating model are identified by using the natural coupled frequencies as observation data.
Identification analysis of structural damage on unit-linked offshore floating models
International Journal of Offshore and Polar Engineering ; 9 , 3 ; 201-207
1999
7 Seiten, 7 Quellen
Aufsatz (Zeitschrift)
Englisch
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