TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Reduced-Order Nonlinear Dynamic Model of Coupled Shaft-Torsional and Blade-Bending Vibrations in Rotors

[+] Author and Article Information
B. O. Al-Bedoor

Mechanical Engineering Department, King Fahd University of Petroleum & Minerals, KFUPM Box 841, Dhahran 31261, Saudi Arabia

J. Eng. Gas Turbines Power 123(1), 82-88 (May 16, 2000) (7 pages) doi:10.1115/1.1341203 History: Received April 28, 2000; Revised May 16, 2000
Copyright © 2001 by ASME
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Schematic diagram of blade-disk-shaft system
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System deformed configuration and coordinate system
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Motor torque to rotate the system to a speed of 1000 RPM in 1 sec
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(a) Blade deflection and (b) frequency spectrum
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Coupling torsional deflection
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Blade first bending mode vibrations
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Blade second bending mode vibrations
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Blade third bending mode vibrations
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Blade fourth bending mode vibrations
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Blade fifth bending mode vibrations




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