Steady-State Unbalance Response of a Three-Disk Flexible Rotor on Flexible, Damped Supports

[+] Author and Article Information
R. E. Cunningham

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio

J. Mech. Des 100(3), 563-573 (Jul 01, 1978) (11 pages) doi:10.1115/1.3453969 History: Received June 27, 1977; Online October 21, 2010


Experimental data are presented for the unbalance response of a flexible, ball bearing supported rotor to speeds above the third lateral bending critical. Values of squeeze film damping coefficients obtained from measured data are compared to theoretical values obtained from short bearing approximation over a frequency range from 5000 to 31,000 cycles/min. Experimental response for an undamped rotor is compared to that of one having oil squeeze film dampers at the bearings. Unbalances applied varied from 0.62 to 15.1 gm-cm.

Copyright © 1978 by ASME
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