The axisymmetric dynamic stability of rotating sandwich circular plates with a constrained damping layer subjected to a periodic uniform radial loading along the outer edge of the host plate is studied in the present paper. The viscoelastic material in middle layer is assumed to be frequency dependent and incompressible, and complex representations of moduli are used. Equations of motion of the system are derived by the finite element method where the geometry stiffness matrices induced by rotation and external load are evaluated from solutions of static problems. Bolotin’s method is employed to determine the regions of dynamic instability while the eigenvalue problems with frequency dependent parameters are solved by the modified complex eigensolution method. Numerical results show that the effects of constrained damping layer tend to stabilize the circular plate system and the widths of unstable regions decrease with increasing of rotational speeds.
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e-mail: chenlw@mail.ncku.edu.tw
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July 2004
Technical Papers
Axisymmetric Dynamic Stability of Rotating Sandwich Circular Plates
Horng-Jou Wang, Graduate Student,
Horng-Jou Wang, Graduate Student
Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan Republic of China
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Lien-Wen Chen, Professor
e-mail: chenlw@mail.ncku.edu.tw
Lien-Wen Chen, Professor
Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan Republic of China
Search for other works by this author on:
Horng-Jou Wang, Graduate Student
Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan Republic of China
Lien-Wen Chen, Professor
Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan Republic of China
e-mail: chenlw@mail.ncku.edu.tw
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received July 2002; revised Nov. 2003. Associate Editor: R. P. S. Han
J. Vib. Acoust. Jul 2004, 126(3): 407-415 (9 pages)
Published Online: July 30, 2004
Article history
Received:
July 1, 2002
Revised:
November 1, 2003
Online:
July 30, 2004
Citation
Wang, H., and Chen, L. (July 30, 2004). "Axisymmetric Dynamic Stability of Rotating Sandwich Circular Plates ." ASME. J. Vib. Acoust. July 2004; 126(3): 407–415. https://doi.org/10.1115/1.1688765
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