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Theoretical approach for determination of normal modes of vibrating mechanical systems with discontinuous properties
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SYSNO ASEP 0328795 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Theoretical approach for determination of normal modes of vibrating mechanical systems with discontinuous properties Tvůrce(i) Fedorchenko, Alexander I. (UT-L) RID
Stachiv, Ivo (FZU-D) RID, ORCID
Wang, A. B. (TW)Zdroj.dok. Proceedings IRF' 2009. - Porto : Faculty of Engineering, University of Porto, 2009 / Gomes J.F.S. ; Meguid S.A. - ISBN 978-972-8826-21-5 Rozsah stran s1503-po286 Poč.str. 8 s. Forma vydání CD ROM - CD ROM Akce International Conference on Integrity, Reliability and Failure /3./ Datum konání 20.07.2009-24.07.2009 Místo konání Porto Země PT - Portugalsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. PT - Portugalsko Klíč. slova normal modes ; laplace transform ; resonance Vědní obor RIV BI - Akustika a kmity CEP IAA200760801 GA AV ČR - Akademie věd CEZ AV0Z20760514 - UT-L (2005-2011) AV0Z10100521 - FZU-D (2005-2011) Anotace In this paper a fundamental solution of the problem describing the longitudinal vibration of the rod with viscous damping has been found. A theoretical approach for the determination of normal modes of vibrating one-dimensional mechanical systems with 3-stepwise constant properties has been put forward. The transcendental equation has been derived from the solution in Laplace image space and its roots are natural frequencies. The equation relates thickness of layers and elastic moduli; it makes possible experimental measurement of thin film thickness and elastic moduli. The physical interpretation of the natural frequencies by introducing an “effective” speed of the wave propagation has been proposed. 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 2010
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