Original title: Finite element modeling of the signal propagation in a thin tube and comparison with experimental data
Authors: Kruisová, Alena ; Kolman, Radek ; Trnka, Jan ; Mračko, Michal
Document type: Papers
Conference/Event: Engineering mechanics 2018 /24./, Svratka (CZ), 20180514
Year: 2018
Language: eng
Abstract: In finite element modeling of wave propagation problems, both the spatial and temporal discretization lead to dispersion errors. It means that the phase velocity of propagated wave is related to its frequency. In framework of temporal-spatial dispersion analysis, the time step size for implicit time integration method based on the Newmark method is proposed for linear and quadratic serendipity plane finite elements. In this paper, we verify the theoretical dispersion analysis by elastic wave propagation in thin tube, where experimental results are known. Such time step size was used in finite element modeling of the stress wave propagating in this thin steel tube, the results of simulations were compared with experimental results.
Keywords: dispersion errors; finite element method; wave propagation
Project no.: EF15_003/0000493, GA17-22615S (CEP)
Funding provider: GA MŠk, GA ČR
Host item entry: Engineering mechanics 2018. Book of full texts, ISBN 978-80-86246-88-8, ISSN 1805-8248

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0290054

Permalink: http://www.nusl.cz/ntk/nusl-390086


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