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RESEARCH PAPERS

Further Experiments on Balancing of a High-Speed Flexible Rotor

[+] Author and Article Information
J. Tonnesen

Department of Machine Design, Technical University of Denmark, Lyngby, Denmark

J. Eng. Ind 96(2), 431-440 (May 01, 1974) (10 pages) doi:10.1115/1.3438348 History: Received June 06, 1973; Online July 15, 2010

Abstract

The accuracy of the influence coefficient method is experimentally investigated. The influence of the number of measurement transducers, their location, and type is demonstrated on a flexible rotor where simultaneous balancing is performed in up to five planes and passing through three critical speeds. The correction weights are calculated by means of a computer program, based on a least-squares minimizing procedure. The method itself is shown to be accurate and uses only a minimum of balancing runs to reduce the vibrations to a true minimum level. The overall accuracy in determining the unbalance weights is found to be 4.5 percent. The method’s effectiveness is demonstrated on a rotor with four balancing planes and with unbalance distributed at random in six and seven planes. The absolute level of residual vibrations is found to be in the ISO 0.4 quality class [5].

Copyright © 1974 by ASME
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