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RESEARCH PAPERS

Vibration Analysis of Large High-Speed Rotating Equipment

[+] Author and Article Information
G. A. Ludwig

Rotating Parts, General Electric Company, Gas Turbine Dept., Schenectady, N. Y.

J. Eng. Ind 88(2), 201-208 (May 01, 1966) (8 pages) doi:10.1115/1.3670924 History: Received June 10, 1965; Online December 08, 2011

Abstract

This paper discusses the application of mobility methods to the lateral vibration analysis of coupled machinery. Some effects of bearing and/or casing structural mobility on the rotational system behavior are shown. In particular, the various types of system behavior and their interrelations are shown to be closely tied to the response of the rotor-support structure. The effect of hydrodynamic oil films are also shown. Lateral vibrational problems have been encountered when connecting drive and driven equipment produced by different manufacturers. Generally, these are caused by natural frequencies in the operating-speed range which result directly from the method of coupling. Methods of solving this problem are presented with emphasis on flexible couplings and their proper inclusion in system response calculations.

Copyright © 1966 by ASME
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