About: Investigation of lateral vibration of rotors supported by long fluid film bearings of non-circular cross section induced by kinematic excitation

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About: Investigation of lateral vibration of rotors supported by long fluid film bearings of non-circular cross section induced by kinematic excitation Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	One possibility how to decrease lateral vibration of rotors that is induced by their foundation movement is to couple the shaft with the stationary part through fluid film bearings. In computational models they are usually incorporated by means of nonlinear force couplings. To determine radial and tangential components of the hydraulical force a pressure function that describes the oil pressure distribution in the bearing gap must be known. This requires to solve a Reynolds' equation. If the bearings are long and of non-circular cross section, a numerical approach must be used. For this purpose a trigonometric collocation method has been proposed. Calculatuion of the Fourier coefficients results in solving a set of linear algebraic equations that must be carrid out by means of a matrix pseudoinversion. In cavitated areas it is assumed ( and confirmed by the measurements ) that pressure of the medium remains constant. The equation of motion is nonlinear and therefore for its solution a Newmark method h One possibility how to decrease lateral vibration of rotors that is induced by their foundation movement is to couple the shaft with the stationary part through fluid film bearings. In computational models they are usually incorporated by means of nonlinear force couplings. To determine radial and tangential components of the hydraulical force a pressure function that describes the oil pressure distribution in the bearing gap must be known. This requires to solve a Reynolds' equation. If the bearings are long and of non-circular cross section, a numerical approach must be used. For this purpose a trigonometric collocation method has been proposed. Calculatuion of the Fourier coefficients results in solving a set of linear algebraic equations that must be carrid out by means of a matrix pseudoinversion. In cavitated areas it is assumed ( and confirmed by the measurements ) that pressure of the medium remains constant. The equation of motion is nonlinear and therefore for its solution a Newmark method h (en)
Title	Investigation of lateral vibration of rotors supported by long fluid film bearings of non-circular cross section induced by kinematic excitation Investigation of lateral vibration of rotors supported by long fluid film bearings of non-circular cross section induced by kinematic excitation (en)
skos:prefLabel	Investigation of lateral vibration of rotors supported by long fluid film bearings of non-circular cross section induced by kinematic excitation Investigation of lateral vibration of rotors supported by long fluid film bearings of non-circular cross section induced by kinematic excitation (en)
skos:notation	RIV/61989100:27230/02:00006623!RIV/2003/GA0/272303/N
http://linked.open.../vavai/riv/strany	729 - 734
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	649670
http://linked.open...ai/riv/idVysledku	RIV/61989100:27230/02:00006623
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	rotors, non circular bearings, response (en)
http://linked.open.../riv/klicoveSlovo	response rotors non circular bearings
http://linked.open...ontrolniKodProRIV	[275DEC214AF2]
http://linked.open...v/mistoKonaniAkce	München
http://linked.open...i/riv/mistoVydani	München
http://linked.open...i/riv/nazevZdroje	Proceedings of the 4th International Conference on Structural Dynamics, EURODYN 2002
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	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2002-09-02 (xsd:date)
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20272400019
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	TU München
https://schema.org/isbn	90-5809-511-8
http://localhost/t...ganizacniJednotka	27230

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