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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Vibration Analysis of a Cracked Beam with a Concentrated Mass Undergoing Rotational Motion

크랙과 집중질량을 갖는 회전 외팔보의 진동 해석

  • 김민권 (한양대학교 기계공학부) ;
  • 유홍희 (한양대학교 대학원 기계공학과)
  • Published : 2009.01.20
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Abstract

Modal characteristics of a cracked beam with a concentrated mass undergoing rotational motion are investigated in this paper. Hybrid deformation variables are employed to derive the equations of motion of a rotating cantilever beam. The flexibility due to crack, which is assumed to be open during the vibration, is calculated basing on a fracture mechanics theory. To obtain more general information, the equations of motion are transformed into a dimensionless form in which dimensionless parameters are identified. The effects of the dimensionless parameters related to the angular speed, the depth and location of a crack and the size and location of a concentrated mass on the modal characteristics of the beam are investigated numerically.

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References

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