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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F11%3A00368679%21RIV12-AV0-61388998
rdf:type
skos:Concept n12:Vysledek
rdfs:seeAlso
http://www.worldscinet.com/ijbc/21/2110/S0218127411030210.html
dcterms:description
The steady state response of a model of circular bladed disk with imperfection is investigated. Disk imperfection results from additional two groups of damping heads fixed on opposite ends of one diameter. These damping heads are introduced into the computing model as additional point mass, damping and stiffness. Such type of imperfection causes the bifurcation of double eigenfrequencies into pairs of close eigenfrequencies. The effect of imperfection is examined both numerically on three-dimensional nonrotating FE-model and analytically on a simplified split 2DOF model of rotating disk excited by single point harmonic force. Nonlinear friction connection is analyzed and equivalent linear damping coefficient is derived and used in the calculation procedure. It is shown that nonproportional distribution of damping strongly influences the high of resonance peaks. Some examples of response curves illustrate the dynamic properties of stationary and rotating disks with mass-damping-stiffness imperfection. The steady state response of a model of circular bladed disk with imperfection is investigated. Disk imperfection results from additional two groups of damping heads fixed on opposite ends of one diameter. These damping heads are introduced into the computing model as additional point mass, damping and stiffness. Such type of imperfection causes the bifurcation of double eigenfrequencies into pairs of close eigenfrequencies. The effect of imperfection is examined both numerically on three-dimensional nonrotating FE-model and analytically on a simplified split 2DOF model of rotating disk excited by single point harmonic force. Nonlinear friction connection is analyzed and equivalent linear damping coefficient is derived and used in the calculation procedure. It is shown that nonproportional distribution of damping strongly influences the high of resonance peaks. Some examples of response curves illustrate the dynamic properties of stationary and rotating disks with mass-damping-stiffness imperfection.
dcterms:title
Vibration of circular bladed disk with imperfections Vibration of circular bladed disk with imperfections
skos:prefLabel
Vibration of circular bladed disk with imperfections Vibration of circular bladed disk with imperfections
skos:notation
RIV/61388998:_____/11:00368679!RIV12-AV0-61388998
n12:predkladatel
n13:ico%3A61388998
n3:aktivita
n19:P n19:Z
n3:aktivity
P(GA101/09/1166), Z(AV0Z20760514)
n3:cisloPeriodika
10
n3:dodaniDat
n21:2012
n3:domaciTvurceVysledku
n9:4849043 n9:1223267
n3:druhVysledku
n16:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
238347
n3:idVysledku
RIV/61388998:_____/11:00368679
n3:jazykVysledku
n8:eng
n3:klicovaSlova
circular bladed disk; vibration; imperfection; nonlinear damping
n3:klicoveSlovo
n6:nonlinear%20damping n6:circular%20bladed%20disk n6:vibration n6:imperfection
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[B092EBD09961]
n3:nazevZdroje
International Journal of Bifurcation and Chaos
n3:obor
n14:BI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n10:GA101%2F09%2F1166
n3:rokUplatneniVysledku
n21:2011
n3:svazekPeriodika
21
n3:tvurceVysledku
Pešek, Luděk Půst, Ladislav
n3:wos
000297520100011
n3:zamer
n18:AV0Z20760514
s:issn
0218-1274
s:numberOfPages
12
n15:doi
10.1142/S0218127411030210