International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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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.)
  • Published : 2010.06.30
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Abstract

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.

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References

  1. Alfredsson, K.S. Josefson, B.L. and Wilson, M.A., 1996. Use of the energy flow concept in vibration design. Journal of AIAA, 34(6), pp. 1250-1255. https://doi.org/10.2514/3.13220
  2. Fahy, F.J. and Pierri, R., 1977. Application of cross-spectral density to a measurement of vibration power flow between connected plates. Journal of the Acoustical Society of America, 62(5), pp.1297-1298. https://doi.org/10.1121/1.381655
  3. Gavric, L. and Pavic, G., 1993. A finite element method for computation of structural intensity by the normal mode approach. Journal of Sound and Vibration, 164(1), pp.29-43. https://doi.org/10.1006/jsvi.1993.1194
  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. https://doi.org/10.1115/1.2930140
  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.
  7. Linjama, J. and Lahti, T., 1992. Estimation of bending wave intensity in beams using the frequency response technique. Journal of Sound and Vibration, 153(1), pp.21-36. https://doi.org/10.1016/0022-460X(92)90624-7
  8. MSC/Nastran, 1996. MSC/Patran-PAT304 (PCL and Customization), Macneal-Schwendler Co.
  9. Noiseux, D.U., 1970. Measurement of power flow in uniform beams and plates. Journal of the Acoustical Society of America, 47(1), pp. 238-247. https://doi.org/10.1121/1.1911472
  10. Pascal, J.C. Carniel, X. and Li, J.F., 2006. Characterisation of a dissipative assembly using structural intensity measurements and energy conservation equation. Mechanical Systems and Signal Processing, 20, pp. 1300-1311. https://doi.org/10.1016/j.ymssp.2005.11.012
  11. Pavic, G., 1976. Measurement of structure borne wave intensity, Part I: Formulation of the methods. Journal of Sound and Vibration, 49(2), pp. 221-230. https://doi.org/10.1016/0022-460X(76)90498-3
  12. Saijyou, K. and Yoshikawa, S., 1996. Measurement of structural and acoustic intensities using near-field acoustical holography. Journal of Applied Physics of Japan, 35, pp.3167-3174. https://doi.org/10.1143/JJAP.35.3167
  13. Sitton, G. 1997. MSC/Nastran Basic Dynamic Analysis User's Guide, Macneal-Schwendler Co.
  14. Verheij, J.W., 1980. Cross spectral density methods for measuring structure borne power flow on beams and pipes. Journal of Sound and Vibration, 70(1), pp.133-139. https://doi.org/10.1016/0022-460X(80)90559-3
  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. https://doi.org/10.1006/jsvi.1995.0381
  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. https://doi.org/10.1016/j.compstruct.2004.01.011
  17. Xu, X.D. Lee, H.P. Wang, Y.Y. and Lu, C., 2004. The energy flow analysis in stiffened plates of marine structures. Thin-Walled Structures, 42, pp. 979-994. https://doi.org/10.1016/j.tws.2004.03.006

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