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Investigation of Efficiency of Starting Iteration Vectors for Calculating Natural Modes

고유모드 계산을 위한 초기 반복벡터의 효율성 연구

  • 김병완 (한국해양연구원 해양시스템안전연구소) ;
  • 경조현 (한국해양연구원 해양시스템안전연구소) ;
  • 홍사영 (한국해양연구원 해양시스템안전연구소) ;
  • 조석규 (한국해양연구원 해양시스템안전연구소) ;
  • 이인원 (한국과학기술원)
  • Published : 2005.01.01

Abstract

Two modified versions of subspace iteration method using accelerated starting vectors are proposed to efficiently calculate free vibration modes of structures. Proposed methods employ accelerated Lanczos vectors as starting iteration vectors in order to accelerate the convergence of the subspace iteration method. Proposed methods are divided into two forms according to the number of starting vectors. The first method composes 2p starting vectors when the number of required modes is p and the second method uses 1.5p starting vectors. To investigate the efficiency of proposed methods, two numerical examples are presented.

Keywords

References

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