Detail publikačního výsledku

Sub-synchronous shaft oscillations due to oil supply

SMOLÍK, J.; RENDL, J.; STIFTER, J.; OMASTA, M.

Originální název

Sub-synchronous shaft oscillations due to oil supply

Anglický název

Sub-synchronous shaft oscillations due to oil supply

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

This paper aims at the modelling and investigation of unstable journal bearing with an emphasis on instabilities such as oil-whirl or further induced oil-whip. For this reason, a test rig for the investigation of these phenomena was built. Geometry, parameters and operating cases of the rig are described in detail in the presented paper. Computational analysis of the test rig was performed using two methods — the finite element method and a multi-body approach. The calculations of pressure distribution in journal bearings were also performed applying two methods — the finite difference method and the finite element method. The results of the analysis are properly introduced and discussed at the end of this paper. The results suggest that a yet unknown sub-synchronous component may appear under specific conditions. The component typically appears at frequency 0.9–0.98 of shaft speed and is likely caused by a location of a bore for oil supply.

Anglický abstrakt

This paper aims at the modelling and investigation of unstable journal bearing with an emphasis on instabilities such as oil-whirl or further induced oil-whip. For this reason, a test rig for the investigation of these phenomena was built. Geometry, parameters and operating cases of the rig are described in detail in the presented paper. Computational analysis of the test rig was performed using two methods — the finite element method and a multi-body approach. The calculations of pressure distribution in journal bearings were also performed applying two methods — the finite difference method and the finite element method. The results of the analysis are properly introduced and discussed at the end of this paper. The results suggest that a yet unknown sub-synchronous component may appear under specific conditions. The component typically appears at frequency 0.9–0.98 of shaft speed and is likely caused by a location of a bore for oil supply.

Klíčová slova

finite difference methods;finite element methods;hydrodynamic lubrication;journal bearings;oil whirl;oscillations

Klíčová slova v angličtině

finite difference methods;finite element methods;hydrodynamic lubrication;journal bearings;oil whirl;oscillations

Autoři

SMOLÍK, J.; RENDL, J.; STIFTER, J.; OMASTA, M.

Vydáno

26.08.2018

Nakladatel

American Society of Mechanical Engineers (ASME)

Místo

New York

ISBN

978-0-7918-5185-2

Kniha

Proceedings of the ASME Design Engineering Technical Conference

Strany od

1

Strany do

8

Strany počet

9

BibTex

@inproceedings{BUT170164,
  author="SMOLÍK, J. and RENDL, J. and STIFTER, J. and OMASTA, M.",
  title="Sub-synchronous shaft oscillations due to oil supply",
  booktitle="Proceedings of the ASME Design Engineering Technical Conference",
  year="2018",
  pages="1--8",
  publisher="American Society of Mechanical Engineers (ASME)",
  address="New York",
  doi="10.1115/DETC2018-86029",
  isbn="978-0-7918-5185-2"
}