Axisymmetric Dynamic Stability of Rotating Sandwich Circular Plates

[+] Author and Article Information
Horng-Jou Wang, Lien-Wen Chen

Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan Republic of China

J. Vib. Acoust 126(3), 407-415 (Jul 30, 2004) (9 pages) doi:10.1115/1.1688765 History: Received July 01, 2002; Revised November 01, 2003; Online July 30, 2004
Copyright © 2004 by ASME
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Grahic Jump Location
The rotating annular plate with constrained damping layer
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The axisymmetric discrete layer annular finite element: (a) basic element (b) three-layered element
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Nondimensional natural frequencies ω̃vs. static in-plane load Ko. (a) Thick host plate, b̃=10; (b) thin host plate, b̃=100. Key: –, with no treatment; [[dashed_line]], with treatment. (ξ̃=0.25,h̃2=h̃3=0.2,ρ̃2=0.5,ρ̃3=1,Ẽ2s=6×10−6(ω/2π)0.494,Ẽ2l=9×10−6(ω/2π)0.494,Ẽ3=1,ν13=0.3,Kt=0).
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Width of instability region ΔΘ̃vs. rotational speed Ω̃. Key: –, with no treatment; [[dashed_line]], with treatment. (ξ̃=0.25,b̃=100,h̃2=h̃3=0.2,ρ̃2=0.5,ρ̃3=1,Ẽ2s=6×10−6(ω/2π)0.494,Ẽ2l=9×10−6(ω/2π)0.494,Ẽ3=1,ν13=0.3,Ko=1,Kt=1).
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The values of Kt* and Θ̃*vs. rotational speed Ω̃. Key: –, Kt*; [[dashed_line]], Θ̃*.(ξ̃=0.25,b̃=100,h̃2=h̃3=0.2,ρ̃2=0.5,ρ̃3=1,Ẽ2s=6×10−6(ω/2π)0.494,Ẽ2l=9×10−6(ω/2π)0.494,Ẽ3=1,ν13=0.3,Ko=1).




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