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
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DOI - Digital Object Identifier
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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
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JQ - Machinery and tools
OECD FORD branch
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Result continuities
Project
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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
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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
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