An unbiased self-contact formulation for explicit FEA stabilized by the bipenalty method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00518691" target="_blank" >RIV/61388998:_____/19:00518691 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

An unbiased self-contact formulation for explicit FEA stabilized by the bipenalty method

Popis výsledku v původním jazyce

In the explicit finite element analysis (FEA), contact boundary conditions are often enforced by the penalty method. However, it is well known that the penalty parameter negatively affects the size of the critical time step of the explicit time integration scheme. A remedy to this issue could provide the bipenalty method. Recently, promising results for 1D contact-impact problems have con rmed this idea. Therefore,further development and testing for higher spatial dimensions followed. The objective of this contribution is to present the energy conservation properties of the bipenalty method and thus to prove the suitability of this approach for solving the explicit FEA contact-impact problems. To this end, a symmetry preserving contact algorithm has been modifed to consider self-contact. Several numerical examples will be presented to demonstrate the performance of the proposed contact algorithm.

Název v anglickém jazyce

An unbiased self-contact formulation for explicit FEA stabilized by the bipenalty method

Popis výsledku anglicky

In the explicit finite element analysis (FEA), contact boundary conditions are often enforced by the penalty method. However, it is well known that the penalty parameter negatively affects the size of the critical time step of the explicit time integration scheme. A remedy to this issue could provide the bipenalty method. Recently, promising results for 1D contact-impact problems have con rmed this idea. Therefore,further development and testing for higher spatial dimensions followed. The objective of this contribution is to present the energy conservation properties of the bipenalty method and thus to prove the suitability of this approach for solving the explicit FEA contact-impact problems. To this end, a symmetry preserving contact algorithm has been modifed to consider self-contact. Several numerical examples will be presented to demonstrate the performance of the proposed contact algorithm.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

GACM Colloquium on Computational Mechanics For Young Scientists From Academia and Industry

ISBN

978-3-7376-5093-9

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

255-258

Název nakladatele

University of Kassel, Germany

Místo vydání

Kassel, Germany

Místo konání akce

University of Kassel

Datum konání akce

28. 8. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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