A method is presented for reducing the lateral response of an imbalanced rotor accelerating or decelerating through its first lateral bending critical speed by using a variable acceleration rate. A lumped parameter model along with a numerical integration scheme is used to simulate the response of a simply supported, single disk rotor during fast acceleration and deceleration through critical speed. The results indicate that the maximum response and/or the total vibrational energy of a rotor passing through the critical speed can be reduced significantly by using a variable acceleration schedule. That is, reducing the acceleration rate after the nominal critical speed is passed. These predictions were verified experimentally for a single disk rotor.
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July 1998
Research Papers
Reducing Lateral Vibrations of a Rotor Passing Through Critical Speeds by Acceleration Scheduling
K. T. Millsaps,
K. T. Millsaps
Marine Propulsion Laboratory, Department of Mechanical Engineering, Naval Postgraduate School, Monterey, CA 93943
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G. L. Reed
G. L. Reed
Marine Propulsion Laboratory, Department of Mechanical Engineering, Naval Postgraduate School, Monterey, CA 93943
Search for other works by this author on:
K. T. Millsaps
Marine Propulsion Laboratory, Department of Mechanical Engineering, Naval Postgraduate School, Monterey, CA 93943
G. L. Reed
Marine Propulsion Laboratory, Department of Mechanical Engineering, Naval Postgraduate School, Monterey, CA 93943
J. Eng. Gas Turbines Power. Jul 1998, 120(3): 615-620 (6 pages)
Published Online: July 1, 1998
Article history
Received:
March 7, 1997
Online:
November 19, 2007
Citation
Millsaps, K. T., and Reed, G. L. (July 1, 1998). "Reducing Lateral Vibrations of a Rotor Passing Through Critical Speeds by Acceleration Scheduling." ASME. J. Eng. Gas Turbines Power. July 1998; 120(3): 615–620. https://doi.org/10.1115/1.2818190
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