Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Vibration Analysis of Water-loaded Cylindrical Array Structures

원통형 배열 구조물의 접수진동 해석

  • 신창주 (부산대학교 기계공학부 소음진동실험실) ;
  • 홍진숙 (부산대학교 기계공학부) ;
  • 정의봉 (부산대학교 기계공학부) ;
  • 서희선 (국방과학연구소)
  • Published : 2009.01.31
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Abstract

This paper summarizes a solution procedure for a large cylindrical structure mounted underneath a ship as a sonar. Vibration analysis of the water loaded structure is required to enhance the structural reliability as well as acoustic performance of the sonar. It is, however, often very difficult to solve such structures since they have many DOFs, considering the frequency of interest and the water-loading. The mode mapping method is proposed and verified to take into account the water-loading with the minimum DOF for the analysis. The cyclic symmetric method is then reviewed to show how the eigen properties of the full model can be obtained from the representative segment model. The solution procedure is finally proposed and applied successfully for a simplified water-loaded cylindrical array structure.

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References

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