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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Finite Element Vibration Analysis of Multi-layered Damped Sandwich Beam with Complex Shear Modulus

복소 전단탄성계수를 갖는 다층 감쇠보의 유한요소 진동 해석

  • 배승훈 (부산대학교 대학원 기계공학부) ;
  • 원성규 (부산대학교 대학원 기계공학부) ;
  • 정의봉 (부산대학교 기계공학부) ;
  • 조진래 (부산대학교 기계공학부 / (주)마이다스아이티) ;
  • 배수룡 (국방과학연구소)
  • Received : 2010.08.26
  • Accepted : 2010.12.06
  • Published : 2011.01.20
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Abstract

In this paper, the general equation of motion of damped sandwich beam with multi-viscoelastic material layer was derived based on the equation presented by Mead and Markus. The viscoelastic layer, which has characteristics of complex shear modulus, was assumed to be dominantly under shear deformation. The equation of motion of n-layered damped sandwich beam in bending could be represented by (n+3)th order ordinary differential equation. Finite element model for the n-layered damped sandwich beam was formulated and programmed using higher order shape functions. Several numerical examples were implemented to show the effects of damped material.

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References

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