Structural Intensity Analysis of Plate Structures Using Modal Analysis

모달해석기법을 이용한 판 구조물의 진동인텐시티 해석

  • 정상민 (부산대학교 대학원 조선해양공학과) ;
  • 조대승 (부산대학교 조선해양공학과) ;
  • 김사수 (부산대학교 조선해양공학과)
  • Published : 1998.04.01

Abstract

Structural intensity of plates experiencing bending vibration is analytically evaluated using the modal analysis based on the assumed mode method. In the analysis, material internal loss and localized damping are considered. The power obtained by structural intensity integration over the circle containing the excitation source is compared with the power injected into plates to verify the accuracy of the presented method and; to evaluate the convergence of mode superposition. The intensity integration is carried out varying the circle radius and the integral step to investigate their effects in case of the power estimation using structural intensities. In addition, the dominant component among internal forces in the energy transfer by the bending vibration of a stiffened plate is investigated.

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