About: Stability and bifurcation analysis of periodically excited rotors supported by hydrodynamic bearings of non-circular cross section

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About: Stability and bifurcation analysis of periodically excited rotors supported by hydrodynamic bearings of non-circular cross section Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Properties of hydrodynamical bearings depend on the shape of their cross section. A correctly designed form of the bearing gap increases the stability limit and enables the rotor systems to operate at higher speed. Fluid film bearings are usually accommodated in the model systems by means of nonlinear force couplings. Determination of the components of the bearing forces arrives at solving a Reynolds' equation that describes the pressure distribution in the oil layer. In short bearings the solution can be expressed in a closed form. For the case of long non-circular bearings a new numerical approach has been developed. As the pressure function is 2p periodic, it is approximated by a finite number of terms of a Fourier series. The Fourier coefficients are calculated by means of a trigonometric collocation method which requires to solve a set of linear algebraic equations. To avoid singularity of the coefficient matrix calculation of the Fourier coefficients is carried out by application of a matrix pse Properties of hydrodynamical bearings depend on the shape of their cross section. A correctly designed form of the bearing gap increases the stability limit and enables the rotor systems to operate at higher speed. Fluid film bearings are usually accommodated in the model systems by means of nonlinear force couplings. Determination of the components of the bearing forces arrives at solving a Reynolds' equation that describes the pressure distribution in the oil layer. In short bearings the solution can be expressed in a closed form. For the case of long non-circular bearings a new numerical approach has been developed. As the pressure function is 2p periodic, it is approximated by a finite number of terms of a Fourier series. The Fourier coefficients are calculated by means of a trigonometric collocation method which requires to solve a set of linear algebraic equations. To avoid singularity of the coefficient matrix calculation of the Fourier coefficients is carried out by application of a matrix pse (en)
Title	Stability and bifurcation analysis of periodically excited rotors supported by hydrodynamic bearings of non-circular cross section Stability and bifurcation analysis of periodically excited rotors supported by hydrodynamic bearings of non-circular cross section (en)
skos:prefLabel	Stability and bifurcation analysis of periodically excited rotors supported by hydrodynamic bearings of non-circular cross section Stability and bifurcation analysis of periodically excited rotors supported by hydrodynamic bearings of non-circular cross section (en)
skos:notation	RIV/61989100:27230/02:00006625!RIV/2003/GA0/272303/N
http://linked.open.../vavai/riv/strany	952-959
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA101/02/0011), Z(MSM 272400019)
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Zapoměl, Jaroslav
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola báňská - Technická univerzita Ostrava / Fakulta strojní
http://linked.open...dnocenehoVysledku	664791
http://linked.open...ai/riv/idVysledku	RIV/61989100:27230/02:00006625
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	rotors, non circular bearings, stability, bifurcations (en)
http://linked.open.../riv/klicoveSlovo	bifurcations stability rotors non circular bearings
http://linked.open...ontrolniKodProRIV	[3A8603F8D7EF]
http://linked.open...v/mistoKonaniAkce	Sydney
http://linked.open...i/riv/mistoVydani	Sydney
http://linked.open...i/riv/nazevZdroje	Proceedings of the IFToMM Sixth International Conference on Rotor Dynamics
http://linked.open...in/vavai/riv/obor	JR
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	New approach to the analysis of dynamic behaviour of nonlinear coupling elements using in rotor dynamic systems
http://linked.open...UplatneniVysledku	2002
http://linked.open...iv/tvurceVysledku	Zapoměl, Jaroslav
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2002-10-30 (xsd:date)
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20272400019
number of pages	8 (xsd:int)
http://purl.org/ne...btex#hasPublisher	UNSW
https://schema.org/isbn	0-7334-1961-5
http://localhost/t...ganizacniJednotka	27230

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