About: Numerical approach to investigation of stability and vibration of rotors supported by long segment bearings lubricated with oil containing air bubbles

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About: Numerical approach to investigation of stability and vibration of rotors supported by long segment bearings lubricated with oil containing air bubbles Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The segment hydrodynamical bearings are used to achieve quiet and stable running of rotor systems. The lubricating oil is assumed to be Newtonian liquid containing nonnegligible amount of air. As the bearing gap is very narrow, the pressure distribution in the oil film can be described by a Reynolds' equation applicable for compressible media. To carry out its solution a pressure-density relationship has been derived. The air solutability in the oil is governed by a Henry's law. If all the air is dissolved, the lubricant behaves as incompressible. A finite difference method applied on solving the Reynolds' equation arrives at a set of differential equations that are consequaently transformed to a set of nonlinear algebraic ones. Stability of the equilibrium position is judged according to the system eigenvalues. Solution of the equation of motion is performed by means of a modified Newmark method. The segment hydrodynamical bearings are used to achieve quiet and stable running of rotor systems. The lubricating oil is assumed to be Newtonian liquid containing nonnegligible amount of air. As the bearing gap is very narrow, the pressure distribution in the oil film can be described by a Reynolds' equation applicable for compressible media. To carry out its solution a pressure-density relationship has been derived. The air solutability in the oil is governed by a Henry's law. If all the air is dissolved, the lubricant behaves as incompressible. A finite difference method applied on solving the Reynolds' equation arrives at a set of differential equations that are consequaently transformed to a set of nonlinear algebraic ones. Stability of the equilibrium position is judged according to the system eigenvalues. Solution of the equation of motion is performed by means of a modified Newmark method. (en) The segment hydrodynamical bearings are used to achieve quiet and stable running of rotor systems. The lubricating oil is assumed to be Newtonian liquid containing nonnegligible amount of air. As the bearing gap is very narrow, the pressure distribution in the oil film can be described by a Reynolds' equation applicable for compressible media. To carry out its solution a pressure-density relationship has been derived. The air solutability in the oil is governed by a Henry's law. If all the air is dissolved, the lubricant behaves as incompressible. A finite difference method applied on solving the Reynolds' equation arrives at a set of differential equations that are consequaently transformed to a set of nonlinear algebraic ones. Stability of the equilibrium position is judged according to the system eigenvalues. Solution of the equation of motion is performed by means of a modified Newmark method. (cs)
Title	Numerical approach to investigation of stability and vibration of rotors supported by long segment bearings lubricated with oil containing air bubbles Numerical approach to investigation of stability and vibration of rotors supported by long segment bearings lubricated with oil containing air bubbles (en) Numerický přístup ke zkoumání stability a kmitání rotorů uložených v dlouhých segmentových ložiskách mazaných olejem obsahujícím vzduchové bubliny (cs)
skos:prefLabel	Numerical approach to investigation of stability and vibration of rotors supported by long segment bearings lubricated with oil containing air bubbles Numerical approach to investigation of stability and vibration of rotors supported by long segment bearings lubricated with oil containing air bubbles (en) Numerický přístup ke zkoumání stability a kmitání rotorů uložených v dlouhých segmentových ložiskách mazaných olejem obsahujícím vzduchové bubliny (cs)
skos:notation	RIV/61989100:27230/04:00010507!RIV09-MSM-27230___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GA101/02/0011), S
http://linked.open...vai/riv/dodaniDat	2009
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	576844
http://linked.open...ai/riv/idVysledku	RIV/61989100:27230/04:00010507
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	long bearings; pressure distribution; bubbles; vibration stability (en)
http://linked.open.../riv/klicoveSlovo	vibration stability pressure distribution bubbles long bearings
http://linked.open...ontrolniKodProRIV	[6D8A35EC231F]
http://linked.open...v/mistoKonaniAkce	Swansea
http://linked.open...i/riv/mistoVydani	London
http://linked.open...i/riv/nazevZdroje	IMechE Conference Transactions, 8th International Conference on Vibrations in Rotating Machinery
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	2004
http://linked.open...iv/tvurceVysledku	Zapoměl, Jaroslav
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2004-09-07 (xsd:date)
issn	1356-1448
number of pages	10 (xsd:int)
http://purl.org/ne...btex#hasPublisher	University of Swansea
http://localhost/t...ganizacniJednotka	27230

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