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http://dx.doi.org/10.5916/jkosme.2009.33.4.497

A Study on the Modal Parameter Identification of a Ship using Operational Modal Analysis  

Kim, Byoung-Ook (대우조선해양 진동소음R&D팀)
Jin, Bong-Man (대우조선해양 진동소음R&D팀)
Kong, Young-Mo (대우조선해양 진동소음R&D팀)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.33, no.4, 2009 , pp. 497-501 More about this Journal
Abstract
When modal tests on the large structures and machinery are performed, it is in general difficult and inaccurate to use artificial excitation devices such as impact hammers, because of insufficient capacity of the device and different environmental conditions of the concerned structures. Therefore, the Operational Modal Analysis(OMA) technique, which is performed by measuring only vibration responses during the operation of the objective product, can be one alternative. In this paper, the way to identify natural frequencies, mode shapes and damping ratios of a ship by using the OMA during the sea trail is described.
Keywords
Singular Value; Frequency Domain Decomposition; Hilbert transform;
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  • Reference
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