Abstract
This paper is concemed with the structural damage detection of the unit-linked floating structure model by coupled free vibration analysis, in combination with filtering algorithm. The structural damage analysis is generally formulated as an inverse problem. The formulated inverse problem must be analyzed under the consideration of stochastic properties on the response of structural system. The filtering algorithms have been known as one of the inverse analysis method. In this study, algorithm based on parametric projection filter is employed as new analytical algorithm on the structural damage identification. The coupled natural frequencies used as the observations and stochastic properties of system responses adopted the data obtained by experimental modal analysis. From identification results, adaptability and characteristics of the algorithm based on parametric projection filter are discussed on the inverse analysis of the fluid-structure interaction coupled system.
