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Vibrational energy flow analysis of coupled cylindrical thin shell structures

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Abstract

In this study, a method for energy flow analysis was developed to predict the vibrational responses of coupled cylindrical thin shell structures in the medium-to-high frequency ranges. To extend the application of the energy flow model for out-of-plane waves in the thin shell to coupled structures, the wave transmission analyses of general coupled cylindrical thin shell structures are performed. Power reflection and transmission coefficients on the coupled line were calculated using the coupling relationships established for coupled cylindrical thin shells. Using these coefficients, an energy flow analysis in which a junction was considered, was performed for coupled cylindrical thin shell structures. The junction consisted of an arbitrary number of cylindrical thin shells coupled along a junction line. Through numerical simulations, the energy flow solutions of coupled cylindrical thin shell structures were compared with those of classical displacement solutions, and they showed well-developed energy density global propagation and decay patterns.

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Authors and Affiliations

  1. Dept. of Shipbuilding & Marine Engineering, Koje College, Koje, 656-701, Korea

    Hyun-Wung Kwon

  2. Dept. of Naval Architecture and Ocean Engineering, Collage of Engineering, Seoul National University, Seoul, 151-742, Korea

    Suk-Yoon Hong

  3. Dept. of Naval Architecture & Ocean Engineering, Chonnam National University, Jeonnam, 550-749, Korea

    Jee-Hun Song

Authors
  1. Hyun-Wung Kwon
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  2. Suk-Yoon Hong
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  3. Jee-Hun Song
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Corresponding author

Correspondence to Jee-Hun Song.

Additional information

Recommended by Associate Editor Junhong Park

Hyun-Wung Kwon received his B.S. degree in Naval Architecture and Ocean Engineering from the Seoul National University, Korea, in 2004 and his Ph.D. in 2009. Currently he is a Professor of 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, and his Ph.D. 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. & Song, JH. Vibrational energy flow analysis of coupled cylindrical thin shell structures. J Mech Sci Technol 30, 4049–4062 (2016). https://doi.org/10.1007/s12206-016-0818-x

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  • DOI: https://doi.org/10.1007/s12206-016-0818-x

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