Vibration of circular bladed disk with imperfections

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00368679" target="_blank" >RIV/61388998:_____/11:00368679 - isvavai.cz</a>
Result on the web
<a href="http://www.worldscinet.com/ijbc/21/2110/S0218127411030210.html" target="_blank" >http://www.worldscinet.com/ijbc/21/2110/S0218127411030210.html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1142/S0218127411030210" target="_blank" >10.1142/S0218127411030210</a>

Result language
angličtina
Original language name
Vibration of circular bladed disk with imperfections
Original language 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-stiffnes
Czech name
—
Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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Project
<a href="/en/project/GA101%2F09%2F1166" target="_blank" >GA101/09/1166: Research of dynamic behaviour and optimalization of complex rotating systems with non-linear couplings and high damping materials</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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