Journal of Mechanical Science and Technology

  • 제20권8호
  • /
  • Pages.1139-1148
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  • 2006
  • /
  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Dynamic Response Analysis of Rotating Composite-VEM Thin-Walled Beams Incorporating Viscoelastic Materials in the Time Domain

  • Na Sung-Soo (Department of Mechanical Engineering, Korea University) ;
  • Park Jae-Yong (Department of Mechanical Engineering, Korea University) ;
  • Park Chul-H. (Department of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Kwak Moon-K. (Department of Mechanical Engineering, Dongguk University) ;
  • Shim Jae-Hong (Department of Mechatronics Engineering, Korea Polytechnic University)
  • 발행 : 2006.08.01
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초록

This paper addresses the analytical modeling and dynamic response of the advanced composite rotating blade modeled as thin-walled beams and incorporating viscoelastic material. The blade model incorporates non-classical features such as anisotropy, transverse shear, rotary inertia and includes the centrifugal and coriolis force fields. The dual technology including structural tailoring and passive damping technology is implemented in order to enhance the vibrational characteristics of the blade. Whereas structural tailoring methodology uses the directionality properties of advanced composite materials, the passive material technology exploits the damping capabilities of viscoelastic material (VEM) embedded into the host structure. The VEM layer damping treatment is modeled by using the Golla-Hughes-McTavish (GHM) method, which is employed to account for the frequency-dependent characteristics of the VEM. The case of VEM spread over the entire span of the structure is considered. The displayed numerical results provide a comprehensive picture of the synergistic implications of both techniques, namely, the tailoring and damping technology on the dynamic response of a rotating thin-walled b ε am exposed to external time-dependent excitations.

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참고문헌

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