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Statements

Subject Item
n2:RIV%2F61989100%3A27230%2F12%3A86087770%21RIV14-GA0-27230___
rdf:type
skos:Concept n3:Vysledek
rdfs:seeAlso
http://www.kme.zcu.cz/acm/index.php/acm/article/view/165/164
dcterms:description
The unbalance and time varying loading are the principal sources of lateral vibrations of rotors and of increase of forces transmitted through the coupling elements into the stationary part. These oscillations and force effects can be considerably reduced if damping devices are added to the coupling elements placed between the rotor and its casing. The theoretical studies and practical experience show that to achieve their optimum performance their damping effect must be controllable. This article focuses on investigation of influence of controlled damping in the rotor supports on its limit state of deformation, fatigue failure and on magnitude of the forces transmitted into the stationary part. The analysed system is a flexible rotor with one disc driven by an electric DC motor and loaded by the disc unbalance and by technological forces depending on the rotor angular position. In the computational model the system vibration is governed by a set of nonlinear differential equations of the first and second orders. To evaluate the fatigue failure both the flexural and torsional oscillations are taken into account. The analysis is aimed at searching for the intervals of angular speeds, at which the rotor can be operated without exceeding the limit states. The unbalance and time varying loading are the principal sources of lateral vibrations of rotors and of increase of forces transmitted through the coupling elements into the stationary part. These oscillations and force effects can be considerably reduced if damping devices are added to the coupling elements placed between the rotor and its casing. The theoretical studies and practical experience show that to achieve their optimum performance their damping effect must be controllable. This article focuses on investigation of influence of controlled damping in the rotor supports on its limit state of deformation, fatigue failure and on magnitude of the forces transmitted into the stationary part. The analysed system is a flexible rotor with one disc driven by an electric DC motor and loaded by the disc unbalance and by technological forces depending on the rotor angular position. In the computational model the system vibration is governed by a set of nonlinear differential equations of the first and second orders. To evaluate the fatigue failure both the flexural and torsional oscillations are taken into account. The analysis is aimed at searching for the intervals of angular speeds, at which the rotor can be operated without exceeding the limit states.
dcterms:title
Investigation of the effect of controllable dampers on limit states of rotor systems Investigation of the effect of controllable dampers on limit states of rotor systems
skos:prefLabel
Investigation of the effect of controllable dampers on limit states of rotor systems Investigation of the effect of controllable dampers on limit states of rotor systems
skos:notation
RIV/61989100:27230/12:86087770!RIV14-GA0-27230___
n3:predkladatel
n4:orjk%3A27230
n5:aktivita
n10:Z n10:S n10:P
n5:aktivity
P(ED1.1.00/02.0070), P(GAP101/10/0209), S, Z(MSM6198910027)
n5:cisloPeriodika
1
n5:dodaniDat
n6:2014
n5:domaciTvurceVysledku
n7:7592566
n5:druhVysledku
n15:J
n5:duvernostUdaju
n13:S
n5:entitaPredkladatele
n16:predkladatel
n5:idSjednocenehoVysledku
142934
n5:idVysledku
RIV/61989100:27230/12:86087770
n5:jazykVysledku
n19:eng
n5:klicovaSlova
steady state response; limit states of deformation and fatigue failure; controllable damping in supports; rotors
n5:klicoveSlovo
n9:controllable%20damping%20in%20supports n9:limit%20states%20of%20deformation%20and%20fatigue%20failure n9:rotors n9:steady%20state%20response
n5:kodStatuVydavatele
CZ - Česká republika
n5:kontrolniKodProRIV
[A3F3C7C45CB1]
n5:nazevZdroje
Applied and Computational Mechanics
n5:obor
n17:JR
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
3
n5:projekt
n8:GAP101%2F10%2F0209 n8:ED1.1.00%2F02.0070
n5:rokUplatneniVysledku
n6:2012
n5:svazekPeriodika
6
n5:tvurceVysledku
Zapoměl, Jaroslav Liberdová, Jana Ferfecki, Petr
n5:zamer
n18:MSM6198910027
s:issn
1802-680X
s:numberOfPages
14
n12:organizacniJednotka
27230