Efficient Analysis Models for Vertical Vibration of Space Framed Structures

3차원 골조구조물의 효율적인 연직진동해석

  • 안상경 (성균관대학교 건축공학과) ;
  • 홍성일 (성균관대학교 건축공학과) ;
  • 이동근 (성균관대학교 건축공학과)
  • Published : 1996.10.01

Abstract

The effect of vertical vibration of a beam is significantly influenced by higher modes of vibration. Therefore, a beam can be modeled using several elements must De used to represent a vibrating beam. As a result, analysis of a space framed structure for vertical vibration requires increase number of elements leading to more complicated model with many degree of freedom which requires large amount of computing resources for dynamic analysis. An efficient analysis method for vertical vibration of space framed structures are proposed in this paper which is presented in three method. The first method is to determine minimum nodes that shall be used to obtain dynamic response with the vertical vibration. Secondly, matrix condensation methods are introduced to reduce the computation efforts used to perform dynamic analysis and the selection of primary degree-of-freedom is proposed. The third method is of using the mass participation factor for the selection of primary degree-of-freedom.

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