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Kinematically excited non-linear vibraton of beam on elastic supports with clearances

Citace: DYK, Š., ZEMAN, V., BYRTUS, M. Kinematically excited non-linear vibraton of beam on elastic supports with clearances. In Engineering mechanics 2014. Brno: Brno University of Technology, Institute of Solid Mechanics, Mechatronics and Biomechanics, 2014. s. 148-151. ISBN: 978-80-214-4871-1 , ISSN: 1805-8248
Druh: STAŤ VE SBORNÍKU
Jazyk publikace: eng
Anglický název: Kinematically excited non-linear vibraton of beam on elastic supports with clearances
Rok vydání: 2014
Místo konání: Brno
Název zdroje: Brno University of Technology, Institute of Solid Mechanics, Mechatronics and Biomechanics
Autoři: Ing. Štěpán Dyk , Prof. Ing. Vladimír Zeman DrSc. , Ing. Miroslav Byrtus Ph.D.
Abstrakt EN: The paper deals with nonlinear vibration of a beam excited by harmonic movement of frame which the beam is fixed in. Except for supports of the ends of the beam, another supports along axis of the beam are considered. In these supports, there are clearances which cause nonlinear vibration of the system. A mathematical model of the beam is obtained using finite element method and decomposition of such a system is used to obtain a model including kinematical excitation. As an application, nonlinear vibration of a guide thimble in spacer grid of nuclear fuel assembly is shown. To get solution, numerical integration in time domain is used and quality of vibration is shown using orbits and phase trajectories of representative dynamical quantities.
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