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Vibration quenching in a large scale rotor-bearing system using journal bearings with variable geometry.
- Source :
-
Journal of Sound & Vibration . Mar2014, Vol. 333 Issue 7, p2087-2099. 13p. - Publication Year :
- 2014
-
Abstract
- Abstract: In large scale rotating machinery the resonance amplitude during the passage through resonance is a matter of consideration because of its influence in the surrounding environment of the rotational system and foundation. In this paper, a variable geometry journal bearing (VGJB), recently patented, is applied for the mounting of a large scale rotor bearing system operating at the range of medium speed. The simulation of the rotor-bearing system incorporates a recent method for simulation of a multi-segment continuous rotor in combination with nonlinear bearing forces. The use of the current bearing gives results that encourage the use of such a bearing in rotating machinery since the vibration amplitude during the passage through the critical speed can be reduced up to 60–70%. In the presented study, the developed amplitude and the rotor stresses are severely reduced compared to those of the system with normal cylindrical journal bearings during a virtual start up of the system. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 0022460X
- Volume :
- 333
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Journal of Sound & Vibration
- Publication Type :
- Academic Journal
- Accession number :
- 93655344
- Full Text :
- https://doi.org/10.1016/j.jsv.2013.11.034