한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제26권4호
  • /
  • Pages.86-91
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  • 2012
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  • 1225-0767(pISSN)
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  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
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유한요소 모델 개선기법을 이용한 비비례 감쇠행렬 추정

Identification of a Nonproportional Damping Matrix Using the Finite Element Model Updating

  • 민천홍 (한국해양과학기술원 선박해양플랜트연구소 해양시스템연구부) ;
  • 김형우 (한국해양과학기술원 선박해양플랜트연구소 해양시스템연구부) ;
  • 이창호 (한국해양과학기술원 선박해양플랜트연구소 해양시스템연구부) ;
  • 홍섭 (한국해양과학기술원 선박해양플랜트연구소 해양시스템연구부) ;
  • 최종수 (한국해양과학기술원 선박해양플랜트연구소 해양시스템연구부) ;
  • 여태경 (한국해양과학기술원 선박해양플랜트연구소 해양시스템연구부)
  • Min, Cheon-Hong (Ocean System Engineering Research Division, Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology) ;
  • Kim, Hyung-Woo (Ocean System Engineering Research Division, Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology) ;
  • Lee, Chang-Ho (Ocean System Engineering Research Division, Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology) ;
  • Hong, Sup (Ocean System Engineering Research Division, Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology) ;
  • Choi, Jong-Su (Ocean System Engineering Research Division, Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology) ;
  • Yeu, Tae-Kyeong (Ocean System Engineering Research Division, Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology)
  • 투고 : 2012.07.02
  • 심사 : 2012.08.20
  • 발행 : 2012.09.01
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초록

A new identification method for a nonproportional damping matrix using the finite element (FE) model updating technique is proposed. Mass and stiffness matrices of the undamped system are identified by FE model updating method. Sensitivity analysis is used to update the FE model, and zero frequencies are considered as design parameters to supplement the information of vibration characteristics. The nonproportional damping matrix is identified through the proposed method. A numerical example is considered to verify the performance of the proposed method. As a result, the damping matrix of the nonproportional system is estimated accurately.

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참고문헌

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