volume 12, issue 3, PA142-A148 1945
DOI: 10.1115/1.4009455
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M. A. Prohl

Abstract: Abstract The existing methods for determining critical speeds are subject to the following limitations: On the one hand the methods that are general, i.e., that permit the calculation of higher critical speeds as well as the fundamental, involve computations so complicated as to be impractical for any but the simplest of rotors. On the other hand, the methods for which the computations are comparatively simple, such as the familiar methods of Rayleigh and Stodola, lack generality in that critica…

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