Large amplitude dynamic behavior of thrust air bearings: modeling and experiments

R.H.M. Franssen, W. Potze, P. de Jong, R.H.B. Fey, H. Nijmeijer

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

Large dynamic loading of air thrust bearings may result in undesired contact between bearing surfaces. The counteracting nonlinear aerodynamic forces delivered by the thin air film in the bearing, which determine if contact will occur, may be computed either by solving the nonlinear Reynolds equation or by using a grid with position dependent dynamic bearing coefficients. It is shown by a numerical case study that both numerical approaches give similar response results. Moreover, it is demonstrated that the model based on the nonlinear
Reynolds equation accurately predicts the experimental large amplitude dynamic behavior of an axialsymmetric air thrust bearing. Hence, both numerical approaches may be used to predict if bearing surfaces will make contact due to large impulsive external forces.
LanguageEnglish
Pages460-466
Number of pages7
JournalTribology International
Volume109
DOIs
StatePublished - May 2017

Fingerprint

Bearings (structural)
thrust bearings
gas bearings
Reynolds equation
Thrust bearings
Air
aerodynamic forces
Experiments
grids
Contacts (fluid mechanics)
Aerodynamics
air
coefficients

Keywords

  • air thrust bearing, large dynamic loading, modeling and experiments, prediction of contact

Cite this

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title = "Large amplitude dynamic behavior of thrust air bearings: modeling and experiments",
abstract = "Large dynamic loading of air thrust bearings may result in undesired contact between bearing surfaces. The counteracting nonlinear aerodynamic forces delivered by the thin air film in the bearing, which determine if contact will occur, may be computed either by solving the nonlinear Reynolds equation or by using a grid with position dependent dynamic bearing coefficients. It is shown by a numerical case study that both numerical approaches give similar response results. Moreover, it is demonstrated that the model based on the nonlinearReynolds equation accurately predicts the experimental large amplitude dynamic behavior of an axialsymmetric air thrust bearing. Hence, both numerical approaches may be used to predict if bearing surfaces will make contact due to large impulsive external forces.",
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Large amplitude dynamic behavior of thrust air bearings : modeling and experiments. / Franssen, R.H.M.; Potze, W.; de Jong, P.; Fey, R.H.B.; Nijmeijer, H.

In: Tribology International, Vol. 109, 05.2017, p. 460-466.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Large amplitude dynamic behavior of thrust air bearings

T2 - Tribology International

AU - Franssen,R.H.M.

AU - Potze,W.

AU - de Jong,P.

AU - Fey,R.H.B.

AU - Nijmeijer,H.

PY - 2017/5

Y1 - 2017/5

N2 - Large dynamic loading of air thrust bearings may result in undesired contact between bearing surfaces. The counteracting nonlinear aerodynamic forces delivered by the thin air film in the bearing, which determine if contact will occur, may be computed either by solving the nonlinear Reynolds equation or by using a grid with position dependent dynamic bearing coefficients. It is shown by a numerical case study that both numerical approaches give similar response results. Moreover, it is demonstrated that the model based on the nonlinearReynolds equation accurately predicts the experimental large amplitude dynamic behavior of an axialsymmetric air thrust bearing. Hence, both numerical approaches may be used to predict if bearing surfaces will make contact due to large impulsive external forces.

AB - Large dynamic loading of air thrust bearings may result in undesired contact between bearing surfaces. The counteracting nonlinear aerodynamic forces delivered by the thin air film in the bearing, which determine if contact will occur, may be computed either by solving the nonlinear Reynolds equation or by using a grid with position dependent dynamic bearing coefficients. It is shown by a numerical case study that both numerical approaches give similar response results. Moreover, it is demonstrated that the model based on the nonlinearReynolds equation accurately predicts the experimental large amplitude dynamic behavior of an axialsymmetric air thrust bearing. Hence, both numerical approaches may be used to predict if bearing surfaces will make contact due to large impulsive external forces.

KW - air thrust bearing, large dynamic loading, modeling and experiments, prediction of contact

U2 - 10.1016/j.triboint.2016.12.024

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