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Experimental Vibration Analysis of Damped Beam Model Using Multi-degree Curve Fitting Method  

Min, Cheon-Hong (Graduate School of Korea Maritime University)
Bae, Soo-Ryong (Agency for Defence Development)
Park, Han-Il (Division of Ocean Development Engineering, Korea Maritime University)
Publication Information
Journal of Ocean Engineering and Technology / v.22, no.1, 2008 , pp. 70-74 More about this Journal
Abstract
It is important to reduce the vibration and noise of submarines and ships. For the purpose of noise reduction, various researches are actively being conducted on the employment of complex structures. However, in the case of numerical analysis for complex structures with damping materials, substantial errors can be generated by the absence of an exact damping model. Thus experimental model analysis is necessary for the verification of a numerical analysis for complex structures. In this research, vibration experiments are conducted in order to ascertain the vibration properties of cantilever beam attached damping materials. First, an initial value is obtained by using a direct linear method. Next, based on this initial value, the exact modal parameters of the cantilever beam are obtained by using the Newton-Raphson method.
Keywords
Curve fitting method; Experimental modal analysis; Damped beam model; Modal parameter; Modal identification;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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