An explicit time scheme with local time stepping for one-dimensional wave propagation in a bimaterial bar

Result code in IS VaVaI
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Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
An explicit time scheme with local time stepping for one-dimensional wave propagation in a bimaterial bar
Original language description
In this paper, we test a two-time step explicit scheme with local time stepping. The standard explicit time scheme in finite element analysis is not able to keep accuracy of stress distribution through meshes with different local Courant numbers for each finite element. The used two-time step scheme with the diagonal mass matrix is based on the modification of the central difference method with pullback interpolation. We present a numerical example of one-dimensional wave propagation in a bimaterial elastic bar. Based on numerical tests, the employed time scheme with pullback interpolation and local stepping technique is able to eliminate spurious oscillations in stress distribution in numerical modelling of shock wave propagation in heterogeneous materials.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Engineering Mechanics 2017
ISBN
978-80-214-5497-2
ISSN
1805-8248
e-ISSN
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Number of pages
4
Pages from-to
474-477
Publisher name
University of technology, Institute of Solid Mechanics, Mechatronics and Biomechanics
Place of publication
Brno
Event location
Svratka
Event date
May 15, 2017
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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