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Calculation of dynamic coefficients for fluid film journal bearings

Akışkan film şaft yataklarının dinamik katsayılarının hesaplanması
Authors: Yücel, Uğur;

Calculation of dynamic coefficients for fluid film journal bearings

Abstract

An analytical method for calculating the stiffness and damping coefficients for journal bearings is briefly reviewed with author's contributions. These coefficients are required for stability calculations of rotor-bearing systems. The Reynolds equation governing the pressure field within a bearing is obtained by simplifying the Navier-Stokes equations in Cartesian coordinates. It is then solved analytically using the short bearing approximation to obtain pressures in the fluid film. Integration of the pressure obtained by the solution of the Reynolds equation defines the bearing forces and the corresponding dynamic stiffness and damping coefficients of short circular bearings. The results presented in this work can be used in the stability calculations of rotor systems with short circular bearings.

Şaft yataklarının rijidlik ve sönüm katsayılarını hesaplamak için analitik bir metot yazarın katkılarıyla birlikte kısaca derleniyor. Bu katsayılar rotor-rulman sistemlerinin kararlılık hesaplamaları için gereklidir. Bir rulman içindeki basıncı veren Reynolds denklemi kartezyen koordinatlarda Navier-Stokes denklemlerinin sadeleştirilmesiyle elde ediliyor. Daha sonra bu denklem akışkan filmdeki basınçları elde etmek için kısa rulman yaklaşımını kullanarak analitik olarak çözülüyor. Reynolds denkleminin çözümünden elde edilen basıncın integrasyonu rulman kuvvetlerini ve bunlara karşılık gelen kısa çembersel rulmanların dinamik rijidlik ve sönüm katsayılarını tanımlar. Bu çalışmada sunulan sonuçlar kısa çembersel rulmanlara sahip rotor sistemlerinin kararlılık hesaplamalarında kullanılabilir.

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Turkey
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Keywords

Rotor, Bearing, Rotor;Bearing;Reynolds equation;Dynamic coefficients;Stability, Rotor; Bearing; Reynolds equation; Dynamic coefficients; Stability, Reynolds equation, Dynamic coefficients, Stability, 530, Rotor;Rulman;Reynolds denklemi;Dinamik katsayılar;Kararlılık

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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