Abstract
Energy flow analysis (EFA) can be used effectively to predict structural vibration in the medium-to-high frequency ranges. In this study, the energy flow finite element method (EFFEM), based on EFA, was used to predict the vibrations of a reinforced cylindrical structure in water. The predicted results of the vibrational energy density for the structure were compared with corresponding experimental results. The structure was divided into several subsystems in the experiment, with several accelerometers attached to each subsystem. The input power excited into the experimental structure was measured using an impedance-head adhered to an exciter. Measured input power was used to predict vibration of the reinforced cylindrical structure by EFFEM in water for comparing experimental and numerical results. A comparison between the experimental and predicted results for the vibrational energy density showed that EFFEM was an effective tool for predicting structural vibration.
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Recommended by Associate Editor Cheolung Cheong
Hyun-Wung Kwon received his B.S. degree in Naval Architecture and Ocean Engineering from the Seoul National University, Korea, in 2004. He also received his Ph.D. from SNU in 2009. Currently, he is a professor at the Department of Shipbuilding at Koje College, Korea. His primary research interest is energy flow analysis in structures and acoustics.
Jee-Hun Song received his B.S. degree in Naval Architecture and Ocean Engineering from the Seoul National University, Korea, in 2003. He also received his Ph.D. from SNU in 2007. Currently, he is a professor of Naval Architecture and Ocean Engineering at Chonnam National University, Korea. His primary research interest is energy flow analysis in structures.
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Kwon, HW., Hong, SY., Oh, DK. et al. Experimental study on the energy flow analysis of underwater vibration for the reinforced cylindrical structure. J Mech Sci Technol 28, 3405–3410 (2014). https://doi.org/10.1007/s12206-014-0404-z
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DOI: https://doi.org/10.1007/s12206-014-0404-z