Stability of a rotor supported on journal bearings with piezoelectric elements

Piotr Przybyłowicz


The paper is concerned with stability analysis of a rotor supported on journal bearings with circular piezoelectric bush made of lead zirconate titanate (PZT). It is known that, apart from many other structural parameters, the oil gap in journal bearings constitutes one of the most important factors responsible for stability of such systems. The piezoelectric ring is capable of changing its radial dimension under a voltage applied to it. The voltage signal can be coupled with angular velocity of the rotor that makes the system adaptive to varying operational conditions. It means that increasing angular velocity slightly diminishes the oil gap what protects the rotor from self-excited vibration that normally occurs at a certain critical rotation speed. The paper is to find the answer to what extent the method is effective, i.e. to evaluate quantitatively how far it can shift the critical threshold towards higher rotation speeds, enlarging this way the range of stable working of the rotor.

Author Piotr Przybyłowicz (FACME / IMDF)
Piotr Przybyłowicz,,
- Institute of Machine Design Fundamentals
Journal seriesZAMM-Zeitschrift fur Angewandte Mathematik und Mechanik, ISSN 0044-2267
Issue year2000
ASJC Classification2604 Applied Mathematics; 2206 Computational Mechanics
Languageen angielski
Score (nominal)20
Score sourcejournalList
Publication indicators Scopus Citations = 2; WoS Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2000 = 0.997; WoS Impact Factor: 2006 = 0.534 (2) - 2007=0.623 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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