Short Bearing Model for the Evaluation of Journal’s Dynamic Angular Misalignment Effects on Rotor Vibrations PUBLIC ACCESS

[+] Author Affiliations
Demetrio C. Zachariadis

Universidade de São Paulo, São Paulo, S.P., Brasil

Paper No. 98-GT-397, pp. V005T14A031; 8 pages
  • ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education
  • Stockholm, Sweden, June 2–5, 1998
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7866-8
  • Copyright © 1998 by ASME


The influence of journal’s dynamic angular misalignment effects on single span flexible rotor vibrations is analysed in a simple system. It comprises a cylindrical plain bearing with two narrow lands separated by an annular groove and a Jeffcott based rotor model. Analytical expressions are presented for all 32 dynamic coefficients of the complete linear bearing model, together with simulation results that provide guidelines for early design stage identification of rotor systems sensitive to angular misalignment.

Copyright © 1998 by ASME
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