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Structural intensity analysis of a large container carrier under harmonic excitations of propulsion system

Cho, Dae-Seung    (Dept. of Naval Architecture and Ocean Engineering, Pusan National University   ); Kim, Kyung-Soo    (Dept. of Naval Architecture and Ocean Engineering, Pusan National University   ); Kim, Byung-Hwa    (New Products R&D Team, Daewoo Shipbuilding & Marine Engineering Co., Ltd.  );
  • 초록

    The structural intensity analysis, which calculates the magnitude and direction of vibrational energy flow from vibratory velocity and internal force at any point of a structure, can give information on dominant transmission paths, positions of sources and sinks of vibration energy. This paper presents a numerical simulation system for structural intensity analysis and visualization to apply for ship structures based on the finite element method. The system consists of a general purpose finite element analysis program MSC/Nastran, its pre- and post-processors and an in-house program module to calculate structural intensity using the model data and its forced vibration analysis results. Using the system, the structural intensity analysis for a 4,100 TEU container carrier is carried out to visualize structural intensity fields on the global ship structure and to investigate dominant energy flow paths from harmonic excitation sources to superstructure at resonant hull girder and superstructure modes.


  • 주제어

    Structural intensity .   Finite element method .   Ship structure .   Container carrier.  

  • 참고문헌 (17)

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    4. Hambric, S.A., 1990. Power flow and mechanical intensity calculations in structural finite element analysis. ASME Journal of Vibration and Acoustics, 112, pp.542-549. 
    5. Kim, B.H., 2006. A study on the low vibration design of container carrier superstructure using the structural intensity analysis. Master thesis, Pusan National University, Korea. 
    6. Lee, D.H. and Cho, D.S., 2001. Structural intensity analysis of local ship structures using finite element method. Journal of the Society of Naval Architects of Korea, 38(3), pp. 62-73.     
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    15. Xu, W. and Koss, L.L., 1995, Frequency response functions for structural intensity, Part I: Theory. Journal of Sound and Vibration, 185(2), pp. 299-334. 
    16. Xu, X.D., Lee, H.P. and Lu, C., 2004. The structural intensities of composite plates with a hole. Composite Structures, 65, pp. 493-498. 
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  • 이 논문을 인용한 문헌 (2)

    1. Kim, Kook-Hyun ; Cho, Dae-Seung 2012. "Out-of-plane Structural Intensity Analysis of Rectangular Thick Plate" 韓國海洋工學會誌 = Journal of ocean engineering and technology, 26(4): 42~49     
    2. 2015. "" International journal of naval architecture and ocean engineering, 7(1): 174~194     

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