International Journal of Naval Architecture and Ocean Engineering

  • 제10권5호
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  • Pages.583-595
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  • 2018
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  • 2092-6782(pISSN)
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  • 2092-6790(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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Dominant components of vibrational energy flow in stiffened panels analysed by the structural intensity technique

  • 투고 : 2017.08.09
  • 심사 : 2017.11.18
  • 발행 : 2018.09.30
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초록

Stiffened panels are widely used in naval architecture and ocean engineering, and knowledge about their dynamic behaviour represents important issue in the design procedure. Ordinary vibration analysis consists of natural frequencies and mode shapes determination and can be extended to forced response assessment, while the Structural Intensity (SI) analysis, assessing magnitude and direction of vibrational energy flow provides information on dominant transmission paths and energy distribution including sink positions. In this paper, vibrational energy flow in stiffened panels under harmonic loading is analyzed by the SI technique employing the finite element method. Structural intensity formulation for plate and beam element is outlined, and developed system combining in-house code and general finite element tool is described. As confirmed within numerical examples, the developed tool enables separation of SI components, enabling generation of novel SI patterns and providing deeper insight in the vibrational energy flow in stiffened panels, comparing to existing works.

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참고문헌

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  2. Dynamic Analysis of Rectangular Plate Stiffened by Any Number of Beams with Different Lengths and Orientations vol.2019, pp.None, 2018, https://doi.org/10.1155/2019/2364515
  3. Effects of mount positions on vibrational energy flow transmission characteristics in aero-engine casing structures vol.39, pp.2, 2018, https://doi.org/10.1177/1461348419845506
  4. Meshless simulation and experimental study on forced vibration of rectangular stiffened plate vol.518, pp.None, 2018, https://doi.org/10.1016/j.jsv.2021.116602