Počet záznamů: 1
Vibration of circular bladed disk with imperfections
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SYSNO ASEP 0368679 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Vibration of circular bladed disk with imperfections Tvůrce(i) Půst, Ladislav (UT-L) RID
Pešek, Luděk (UT-L) RIDZdroj.dok. International Journal of Bifurcation and Chaos. - : World Scientific Publishing - ISSN 0218-1274
Roč. 21, č. 10 (2011), s. 2893-2904Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova circular bladed disk ; vibration ; imperfection ; nonlinear damping Vědní obor RIV BI - Akustika a kmity CEP GA101/09/1166 GA ČR - Grantová agentura ČR CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000297520100011 DOI 10.1142/S0218127411030210 Anotace 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. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2012 Elektronická adresa http://www.worldscinet.com/ijbc/21/2110/S0218127411030210.html
Počet záznamů: 1