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Theoretical approach for determination of normal modes of vibrating mechanical systems with discontinuous properties

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F09%3A00328795" target="_blank" >RIV/68378271:_____/09:00328795 - isvavai.cz</a>

  • Alternative codes found

    RIV/61388998:_____/09:00328795

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Theoretical approach for determination of normal modes of vibrating mechanical systems with discontinuous properties

  • Original language description

    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 possibleexperimental 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.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    BI - Acoustics and oscillation

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/IAA200760801" target="_blank" >IAA200760801: Pulsatile jets for control of flow fields</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2009

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Proceedings IRF' 2009

  • ISBN

    978-972-8826-21-5

  • ISSN

  • e-ISSN

  • Number of pages

    8

  • Pages from-to

  • Publisher name

    Faculty of Engineering, University of Porto

  • Place of publication

    Porto

  • Event location

    Porto

  • Event date

    Jul 20, 2009

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article