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

Sungsoo Na; Jaeyong Park; Chul H. Park; Moon K. Kwak; Jae-Hong Shim

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자료유형: 학술저널

저자정보: Sungsoo Na Jaeyong Park Chul H. Park Moon K. Kwak Jae-Hong Shim

저널정보: 대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.20 No.8

발행연도: 2006.8

수록면: 1,139 - 1,148 (10page)

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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 beam exposed to external time-dependent excitations.

#Thin-Walled Composite Beam #Viscoelastic Material #GHM Method #Passive Damping

영어 초록
1. Introduction
2. Formulation of the Composite-VEM Thin-Walled Beam
3. Golla-Hughes-McTavish Representation of VEM
4. Modeling Formulation of Composite-VEM Thin-Walled BEAM
5. Dynamic Equations of Rotating Contilevered Beams
6. Numerical Illustrations and Discussions
7. Conclusions
References

참고문헌 (13)

참고문헌 신청

DiTaranto R. A., 1965, "Theory of Vibratory Bending for Elastic and Viscoelastic Layered Finite-Length Beams," ASME Journal of Applied Mechanics, Vol.32, pp.881~886.

Hyer, M. W., 1997, "Stress Analysis of Fiber Reinforced Composote Materials," WCB McGraw-Hill.

Kerwin, E. M., 1959, "Damping of Flexural Waves by a Constrained Viscoelastic Layer," Journal of the Acoustical Society of America, Vol.31 pp.952~962.

Lam, M. J., Inman, D. J. and Saunders, W. R., 1997, "Vibration Control through Passive Constrained Layer Damping and Active Control," Journal of Intelligent Material System and Structures, Vol.8, pp.663~677.

McTavish, D. J. and Hughes, P. C., 1992, "Finite Element Modeling of Linear Viscoelastic Structures: the GHM Method," AIAA-92-2380, pp.1753~1763.

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