Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

Structure-borne Noise Analysis of Marine Diesel Engine Considering Receptance of Hull Structure at Mounting Point

선체 마운트 지지점에서의 리셉턴스를 고려한 선박용 디젤 엔진의 고체전달음 해석

  • Received : 2010.09.20
  • Accepted : 2010.12.06
  • Published : 2011.02.20
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents an efficient method to analyze noise and vibration of marine diesel engines mounted on flexible hull structure. The analysis model should in general include the hull structure, leading to lots of computational efforts. To minimize the computational efforts, in this paper, the transfer synthesis utilizing the receptance at the mounting points is proposed. The procedure is then verified by comparing the results with those from the full model calculation. The effects of flexible hull structure on the acoustic power from engine block are finally investigated. It is found that the effect of the hull is significant when the receptance of hull structure is similar to or greater than that of mount or engine block.

Keywords

References

  1. Van Herbruggen, J. and Van der Linden, P. J. G., Knittel, H.-J. and Schnur, J., 2001, Engine Internal Dynamic Force Identification and the Combination with Engine Structure and Vibro-acoustics Transfer Information, SAE paper 2001-01-1596.
  2. Park, J. G., Jeong, W. B., Seo, Y. S. and Yoo, W. S., Optimization of Crank Angle to Reduce Excitation Forces and Moments in Engines, Journal of Mechanical Science and Technology, Vol. 21, No. 2, pp. 272-281.
  3. Kim, D. H., Hong, C. S., Jeong, W. B. and Park, J. G., 2007, Radiated Noise Analysis of Marine Diesel Engine from Structural Vibration, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 18, No. 7, pp. 26-34. https://doi.org/10.5050/KSNVN.2008.18.1.026
  4. Han, H. S. and Son, Y. J., 2009, Investigation for the Restriction of the Stiffness and Mechanical Impedance of the Shipboard Floor and Foundation Considering Dynamic Stiffness of the Anti-vibration Mount, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 19, No. 3, pp. 320-326. https://doi.org/10.5050/KSNVN.2009.19.3.320
  5. Zheng, H., Liu, G. R., Tao, J. S. and Lam, K. Y., 2001, FEM/BEM Analysis of Diesel Piston-slap Induced Ship Hull Vibration and Underwater Noise, Applied Acoustics, Vol. 62, No. 4, pp. 341-358. https://doi.org/10.1016/S0003-682X(00)00046-3
  6. Ren, Y. and Beards, C. F., 1995, On Substructure Synthesis with FRF Data, Journal of Sound and Vibration, Vol. 185, No.5, pp. 845-866. https://doi.org/10.1006/jsvi.1995.0421
  7. Jeong, W. B., Ahn, S. J. and Kim, W. Y., 1995, Experimental Vibration Analysis of Vehicle Body-engine Systems by Transfer Function Synthesis Method, Proceedings of the KSNVE Annual Autumn Conference, pp. 289-295.