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Exponential damping as an approach to internal hysteretic damping of rotor systems: FEM model of Timoshenko rotating beam with Maxwell-Weichert damping model

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46709002%3A_____%2F12%3A%230000496" target="_blank" >RIV/46709002:_____/12:#0000496 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Exponential damping as an approach to internal hysteretic damping of rotor systems: FEM model of Timoshenko rotating beam with Maxwell-Weichert damping model

  • Original language description

    Since material losses of many engineering materials are known to be independent on frequency, the viscous damping is not always appropriate model of damping. In the case of structures, the effect of damping is usually small far from the system resonance.Unlike the case of structures, the material damping of rotor can lead to system instability. Traditional concept of hysteretic damping introduced by complex modulus of elasticity has serious drawback of its inapplicability in the time domain. Also it isinconsistent when frequency of vibration tends to zero, chat is the case of rotor undergoing synchronous forward precession. In this paper, the Maxwell-Weichert material model is used to approach hysteretic material damping of rotor systems. Presented finite element model of Timoshenko rotating beam with non-viscous internal damping with exponential kernel is suitable for time domain solutions as well as for calculation of decay rates and Campbell plots of rotor systems.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    JQ - Machinery and tools

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    N - Vyzkumna aktivita podporovana z neverejnych zdroju

Others

  • Publication year

    2012

  • Confidentiality

    C - Předmět řešení projektu podléhá obchodnímu tajemství (§ 504 Občanského zákoníku), ale název projektu, cíle projektu a u ukončeného nebo zastaveného projektu zhodnocení výsledku řešení projektu (údaje P03, P04, P15, P19, P29, PN8) dodané do CEP, jsou upraveny tak, aby byly zveřejnitelné.

Data specific for result type

  • Article name in the collection

    Advances in Mechanisms Design, Proceedings of TMM 2012

  • ISBN

    978-94-007-5124-8

  • ISSN

    2211-0984

  • e-ISSN

  • Number of pages

    9

  • Pages from-to

    253-261

  • Publisher name

    Springer

  • Place of publication

    Liberec, Czech Republic

  • Event location

    Technical University of Liberec

  • Event date

    Sep 4, 2012

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article