Ehehalt, Ulrich ; Hahn, Eric ; Markert, Richard (2005)
Motion pattern at rotor stator contact.
International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (ASME 2005). Long Beach, California, USA (24.09.2005-28.09.2005)
doi: 10.1115/DETC2005-84440
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
The present paper discusses the various movement patterns during rotor stator contact. Both rotor and stator are assumed to be flexible damped single degree of freedom systems. The contact is described by a flexible viscoelastic model. Dry friction between rotor and stator is taken into account. Despite strong non-linearity due to contact, rotor unbalance causes purely synchronous motions. However, in some circumstances, the synchronous motion may become unstable and the rotor motion turns into a non-synchronous state, which can be very destructive. Non-synchronous motions include backward whirl, sub- and super-harmonic vibration and chaotic motion. The influence of various system parameters on the different types of motion is investigated by numerical simulation. The transients between synchronous to non-synchronous motions are exemplarily demonstrated by run-up and run-down processes. It is shown that different motion types may co-exist. Even in speed regions where the synchronous whirl is stable, non-synchronous motions with rotor stator contact are possible.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2005 |
| Autor(en): | Ehehalt, Ulrich ; Hahn, Eric ; Markert, Richard |
| Art des Eintrags: | Bibliographie |
| Titel: | Motion pattern at rotor stator contact |
| Sprache: | Deutsch |
| Publikationsjahr: | 2005 |
| Ort: | New York City, USA |
| Buchtitel: | ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
| Veranstaltungstitel: | International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (ASME 2005) |
| Veranstaltungsort: | Long Beach, California, USA |
| Veranstaltungsdatum: | 24.09.2005-28.09.2005 |
| DOI: | 10.1115/DETC2005-84440 |
| Kurzbeschreibung (Abstract): | The present paper discusses the various movement patterns during rotor stator contact. Both rotor and stator are assumed to be flexible damped single degree of freedom systems. The contact is described by a flexible viscoelastic model. Dry friction between rotor and stator is taken into account. Despite strong non-linearity due to contact, rotor unbalance causes purely synchronous motions. However, in some circumstances, the synchronous motion may become unstable and the rotor motion turns into a non-synchronous state, which can be very destructive. Non-synchronous motions include backward whirl, sub- and super-harmonic vibration and chaotic motion. The influence of various system parameters on the different types of motion is investigated by numerical simulation. The transients between synchronous to non-synchronous motions are exemplarily demonstrated by run-up and run-down processes. It is shown that different motion types may co-exist. Even in speed regions where the synchronous whirl is stable, non-synchronous motions with rotor stator contact are possible. |
| Zusätzliche Informationen: | Paper No. DETC2005-84440 |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Angewandte Dynamik (AD) |
| Hinterlegungsdatum: | 20 Nov 2008 08:24 |
| Letzte Änderung: | 05 Dez 2024 05:56 |
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