SIMULATION OF MODALLY REDUCED ROTATING SYSTEMS WITH EQUIVALENT BEARING FORCES

Wolfgang Witteveen, Helmut Holl

Research output: Chapter in Book/Report/Conference proceedingsConference contribution

Abstract

The consideration of state depended and non linear elastohydrodynamic bearing loads can be of remarkable computational effort in the framework of a modally reduced system. This is caused by the common strategy, in which such forces are computed in the coordinates of the high dimensional unreduced space. This paper is devoted to a more efficient computation of such bearing loads. It will be shown that the mode base of the elastic bearing block leads to an associated base of force trial vectors which can be used for an efficient approximation of the bearing forces. Consequently, the force computation can be done in the low dimensional space of the reduced system which is a significant improvement in terms of computational effort. This contribution closes with a numerical example in which a convergence study with respect to the used number of modes will be presented.
Original languageEnglish
Title of host publicationProceedings of the 8th IFtoMM International Conference on Rotordynamics
Publication statusPublished - 2010
Event8th IFtoMM International Conference on Rotordynamics - Seoul, Korea, Republic of
Duration: 12 Sep 201015 Sep 2010

Conference

Conference8th IFtoMM International Conference on Rotordynamics
CountryKorea, Republic of
CitySeoul
Period12.09.201015.09.2010

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