Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Selection of Optimal Supporting Position to Maximize Natural Frequency of the Structure Using Frequency Response Function

주파수 응답함수를 이용한 구조물 고유진동수 극대화를 위한 최적 지지점 선정

  • 박용화 (한국표준과학연구원 음향진동 연구실) ;
  • 정완섭 (한국표준과학연구원 음향진동 연구실) ;
  • 박윤식 (한국과학기술원 기계공학과)
  • Published : 2000.08.01
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Abstract

A procedure to determine the realizable optimal positions of rigid supports is suggested to get a maximum fundamental natural frequency. a measured frequency response function based substructure-coupling technique is used to model the supported structure. The optimization procedure carries out the eigenvalue sensitivity analysis with respect to the stiffness of supports. As a result of such stiffness optimization, the optimal rigid-support positions are shown to be determined by choosing the position of the largest stiffness. The optimally determined support conditions are verified to satisfy the eigenvalue limit theorem. To demonstrate the effectiveness of the proposed method, the optimal support positions of a plate model are investigated. Experimental results indicate that the proposed method can effectively find out the optimal support conditions of the structure just based on the measured frequency response functions without any use of numerical model of the structure.

Keywords

References

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