An Analysis on Structureborne Noise Tranmission Loss of Ship Structure

선체구조의 고체음 전달해석

  • 강현주 (한국해사기술연구소 음향연구실) ;
  • 김재승 (한국해사기술연구소 음향연구실) ;
  • 김현실 (한국해사기술연구소 음향연구실)
  • Published : 1991.04.01

Abstract

When predicting shipboard noise levels, the accuracy depends largely on the value of the structureborne noise transmission loss. Although empirical formulars are frequently used because of their simplicities, researches on the analytical methods to estimate the transmission loss of structureborne noise such as wave guide theory and SEA has long been one of the major topics in shipboard acoustics to overcome the inherent limitations of empirical ones. This paper describes an application of SEA to predict the transmission loss of the structurebornenoise of a simple ship-like structural model consisted of 22 flat plates. The result shows that discrepancies between experimental and theoretical transmission losses are less than 3 dB.

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