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Dispersion errors for wave propagation in thin plate due to the finite element method
- 1.0515394 - ÚT 2020 RIV CZ eng C - Conference Paper (international conference)
Kruisová, Alena - Kolman, Radek - Mračko, Michal
Dispersion errors for wave propagation in thin plate due to the finite element method.
COMPUTATIONAL MECHANICS 2019. Plzeň: University of West Bohemia, 2019, s. 105-108. ISBN 978-80-261-0889-4.
[Conference with international participation COMPUTATIONAL MECHANICS 2019 /35./. Srní (CZ), 04.11.2019-06.11.2019]
R&D Projects: GA ČR(CZ) GA19-14237S
Institutional support: RVO:61388998
Keywords : dispersion in FEM * Newmark time integration method * modelling of Lamb's waves
OECD category: Applied mechanics
In modelling of wave propagation by finite element method, both the spatial and temporal discretization lead to dispersion errors. For 2D plane strain elements these errors can be stated analytically. These analytical relations derived for harmonical waves in the infinite continuum can be used for error estimation on an example of simulation of Lamb's wave in plate using the implicit time integration method. So the analytical relations for dispersion errors can serve for determination of element size and time step size in wave propagation.
Permanent Link: http://hdl.handle.net/11104/0302603
Number of the records: 1