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TECHNICAL PAPERS

On the Frictional Damping Characterization of Compliant Bump Foils

[+] Author and Article Information
Mohsen Salehi, Hooshang Heshmat, James F. Walton

Mohawk Innovative Technology, Inc. (MiTi ® ), 1037 Watervliet-Shaker Road, Albany, NY 12205URL:www.miti.cc

J. Tribol 125(4), 804-813 (Sep 25, 2003) (10 pages) doi:10.1115/1.1575774 History: Received August 29, 2002; Revised February 25, 2003; Online September 25, 2003
Copyright © 2003 by ASME
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References

Figures

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Components of frictional energy
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Bump foil configuration
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The hysteretic and dry friction models
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Experimental test rig for shaker test
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Test section with components
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Hysteresis loops for tests at Xo=5.08 μm and Fn=135 N
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Hysteresis loops for test with f=1000 Hz and Fn=135 N
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Hystersis loop for test at f=1000 Hz and Xo=5.08 μm
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Variation of damping with frequency (Xo=5.08 μm and Fn=135 N)
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Variation of damping with amplitude of motion
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Variation of damping with static load
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Variation of dynamic coefficients, C* and μ* with frequency
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Gas turbine engine simulator layout and hardware
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Orbital track for the rotor in base condition (0.27 gr-mm imbalance level)
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Orbital track for rotor system at highly imbalanced condition

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