About: Response on seismic excitation of a rotor coupled with a flexible stationary part through long non-circular fluid film bearings

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About: Response on seismic excitation of a rotor coupled with a flexible stationary part through long non-circular fluid film bearings Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A number of rotors in stationary industrial devices ( e.g. steam or gas turbines, rolls of rolling mill stands, etc. ) are coupled with a flexible stationary part through fluid film bearings. Because it is often required to know their response on seismic excitation combined with unbalance loading, it is necessary to deal with possibilities how the treat this problem by means of a computer modelling method. Both the theory and observations show that if holes in the bearing shells are circular then the rotor systems are prone to exhibit subharmonic or self excited vibration. Increase of the critical rotational speed can be achieved if non-circular bearings are applied. In computational models the hydrodynamical bearings are usually accommodated by means of non linear force couplings. To determine components of the hydraulical force it is necessary to know a pressure function that requires to solve a Reynolds' equation. For this purpose a new approach based on utilization of a trigonometric colloca A number of rotors in stationary industrial devices ( e.g. steam or gas turbines, rolls of rolling mill stands, etc. ) are coupled with a flexible stationary part through fluid film bearings. Because it is often required to know their response on seismic excitation combined with unbalance loading, it is necessary to deal with possibilities how the treat this problem by means of a computer modelling method. Both the theory and observations show that if holes in the bearing shells are circular then the rotor systems are prone to exhibit subharmonic or self excited vibration. Increase of the critical rotational speed can be achieved if non-circular bearings are applied. In computational models the hydrodynamical bearings are usually accommodated by means of non linear force couplings. To determine components of the hydraulical force it is necessary to know a pressure function that requires to solve a Reynolds' equation. For this purpose a new approach based on utilization of a trigonometric colloca (en) A number of rotors in stationary industrial devices ( e.g. steam or gas turbines, rolls of rolling mill stands, etc. ) are coupled with a flexible stationary part through fluid film bearings. Because it is often required to know their response on seismic excitation combined with unbalance loading, it is necessary to deal with possibilities how the treat this problem by means of a computer modelling method. Both the theory and observations show that if holes in the bearing shells are circular then the rotor systems are prone to exhibit subharmonic or self excited vibration. Increase of the critical rotational speed can be achieved if non-circular bearings are applied. In computational models the hydrodynamical bearings are usually accommodated by means of non linear force couplings. To determine components of the hydraulical force it is necessary to know a pressure function that requires to solve a Reynolds' equation. For this purpose a new approach based on utilization of a trigonometric colloca (cs)
Title	Response on seismic excitation of a rotor coupled with a flexible stationary part through long non-circular fluid film bearings Response on seismic excitation of a rotor coupled with a flexible stationary part through long non-circular fluid film bearings (en) Odezva na seismické buzení rotoru spojeného se stacionární částí pomocí dlouhých kapalinných ložisek (cs)
skos:prefLabel	Response on seismic excitation of a rotor coupled with a flexible stationary part through long non-circular fluid film bearings Response on seismic excitation of a rotor coupled with a flexible stationary part through long non-circular fluid film bearings (en) Odezva na seismické buzení rotoru spojeného se stacionární částí pomocí dlouhých kapalinných ložisek (cs)
skos:notation	RIV/61989100:27230/04:00010508!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	584517
http://linked.open...ai/riv/idVysledku	RIV/61989100:27230/04:00010508
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	rotor system; long bearings; seismic excitation (en)
http://linked.open.../riv/klicoveSlovo	rotor system long bearings seismic excitation
http://linked.open...ontrolniKodProRIV	[70ED102183FD]
http://linked.open...v/mistoKonaniAkce	Tianjin
http://linked.open...i/riv/mistoVydani	Tianjin
http://linked.open...i/riv/nazevZdroje	Proceedings of the 11th World Congress in Mechanism and Machine Science
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	2004-04-01 (xsd:date)
number of pages	5 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Tianjin University
https://schema.org/isbn	7-111-14073-7
http://localhost/t...ganizacniJednotka	27230

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