0518611 - ÚT 2020 RIV DE eng C - Konferenční příspěvek (zahraniční konf.)
Kolman, Radek - Cho, S.S. - Park, K.C. - Berezovski, A. - González, J. A. - Adámek, V. - Hora, Petr
Elastic wave propagation in periodical one-dimensional problems: Accurate finite element modelling.
GACM Colloquium on Computational Mechanics For Young Scientists From Academia and Industry. Kassel, Germany: University of Kassel, Germany, 2019 - (Gleim, T.; Lange, S.), s. 23-25. ISBN 978-3-7376-5093-9.
[GACM Colloquium on Computational Mechanics For Young Scientists From Academia and Industry /8./. University of Kassel (DE), 28.08.2019-30.08.2019]
Grant CEP: GA AV ČR(CZ) GA19-04956S; GA MŠMT(CZ) EF15_003/0000493
Institucionální podpora: RVO:61388998
Klíčová slova: wave propagation * finite element method * spurious oscillations
Obor OECD: Applied mechanics
Web výsledku:
https://www.uni-kassel.de/upress/online/OpenAccess/978-3-7376-5093-9.OpenAccess.pdf

In this contribution, we present results of novel explicit finite element approach for accurate modelling of elastic wave propagation in periodical one-dimensional layered bars. Standard approaches in explicit time integration of the finite element discretized system produce dominant spurious oscillations of stress distributions. By meaning of the local stepping process, the stress spurious oscillations are eliminated and the time scheme is suitable for accurate modelling of elastic wave propagation in heterogeneous media using the finite element method. The presented time scheme is tested in elastic wave propagation in a layered bar with two different materials.
Trvalý link: http://hdl.handle.net/11104/0304503