한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제15권5호
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  • Pages.620-628
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  • 2005
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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크랙을 가진 회전 외팔보의 동특성 해석

Dynamic Behavior of Rotating Cantilever Beam with Crack

  • 윤한익 (동의대학교 기계공학과) ;
  • 손인수 (동의대학교 산업기술개발 연구소)
  • 발행 : 2005.05.01
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초록

In this paper, we studied about the dynamic behavior of a cracked rotating cantilever beam. The influences of a rotating angular velocity, the crack depth and the crack position on the dynamic behavior of a cracked cantilever beam have been studied by the numerical method. The equation of motion is derived by using the Lagrange's equation. The cracked cantilever beam is modeled by the Euler-Bernoulli beam theory. The crack is assumed to be in the first mode of fracture and to be always opened during the vibrations. The lateral tip-displacement and the axial tip-deflection of a rotating cantilever beam is more sensitive to the rotating angular velocity than the depth and position of crack. Totally, as the crack depth is increased, the natural frequency of a rotating cantilever beam is decreased in the first and second mode of vibration. When the crack depth is constant, the natural frequencies of a rotating cantilever beam are proportional to the rotating angular velocity in the each direction.

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참고문헌

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피인용 문헌

  1. Development of the Natural Frequency Analysis System to Examine the Defects of Metal Parts vol.24, pp.3, 2015, https://doi.org/10.5369/JSST.2015.24.3.169