Počet záznamů: 1
Dynamics of beam pair coupled by visco-elastic interlayer
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SYSNO ASEP 0453509 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Dynamics of beam pair coupled by visco-elastic interlayer Tvůrce(i) Náprstek, Jiří (UTAM-F) RID, ORCID, SAI
Hračov, Stanislav (UTAM-F) RID, SAICelkový počet autorů 2 Zdroj.dok. Applied and Computational Mechanics - ISSN 1802-680X
Roč. 9, č. 2 (2015), s. 127-140Poč.str. 14 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova double-beam dynamics ; visco-elastic interlayer ; kinematic damping Vědní obor RIV JM - Inženýrské stavitelství CEP GP13-41574P GA ČR - Grantová agentura ČR GA15-01035S GA ČR - Grantová agentura ČR Institucionální podpora UTAM-F - RVO:68378297 Anotace An exact method is presented for solving the vibration of a double-beam system subject to harmonic excitation. The system consists of a loaded main beam and an auxiliary beam joined together using massless visco-elastic layer. The Euler-Bernoulli model is used for the transverse vibrations of beams, and the spring-dashpot represents a simplified model of viscoelastic material. The damping is assumed to be neither small nor proportional, and the forcing function can be either concentrated at any point or distributed continuously. The method involves a simple change of variables and modal analysis to decouple and to solve the governing differential equations respectively. A case study is solved in detail to demonstrate the methodology, and the frequency responses are shown in dimensionless parameters for low and high values of stiffness and damping of the interlayer. The analysis reveals two sets of eigen-modes: (i) the odd in-phase modes whose eigen-values and resonant peaks are independent of stiffness and damping, and (ii) the even out-of-phase modes whose eigen-values increase with raising stiffness and resonant peaks decrease with increasing damping. The closed-form solution and relevant plots (especially thethree-dimensional ones) illustrate not only the principles of the vibration problem but also shed light on practical applications. Pracoviště Ústav teoretické a aplikované mechaniky Kontakt Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Rok sběru 2016 Elektronická adresa http://www.kme.zcu.cz/acm/acm/article/view/292
Počet záznamů: 1