Modeling of large deformation of the foam part using LS-DYNA

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46709002%3A_____%2F21%3AN0000003" target="_blank" >RIV/46709002:_____/21:N0000003 - isvavai.cz</a>

Výsledek na webu

<a href="https://dspace5.zcu.cz/bitstream/11025/46189/2/CM2021_Conference_Proceedings-162-164.pdf" target="_blank" >https://dspace5.zcu.cz/bitstream/11025/46189/2/CM2021_Conference_Proceedings-162-164.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modeling of large deformation of the foam part using LS-DYNA

Popis výsledku v původním jazyce

Our article deals with modeling large deformations during the drop test of the part made from expanded polypropylene (EPP). This work is related to simulations considered only static material tests [2] and measurements focused on a real drop test [3]. EPP foam is used for the damping part of the protective helmet. These helmets are usually tested to meet technical standards when the helmet is subjected to impact by a rigid punch (drop test). The numerical analysis was done using explicit FE method (solver LS-DYNA) so the full dynamic behavior of the tested structure is considered. Because the used foam material has a strongly nonlinear behavior and the dynamic loading does not have a constant speed, it was necessary to measure the stress-strain characteristics at different values of the strain rate. These curves were obtained by the dynamic tests using the Split-Hopkinson pressure bar method.

Název v anglickém jazyce

Modeling of large deformation of the foam part using LS-DYNA

Popis výsledku anglicky

Our article deals with modeling large deformations during the drop test of the part made from expanded polypropylene (EPP). This work is related to simulations considered only static material tests [2] and measurements focused on a real drop test [3]. EPP foam is used for the damping part of the protective helmet. These helmets are usually tested to meet technical standards when the helmet is subjected to impact by a rigid punch (drop test). The numerical analysis was done using explicit FE method (solver LS-DYNA) so the full dynamic behavior of the tested structure is considered. Because the used foam material has a strongly nonlinear behavior and the dynamic loading does not have a constant speed, it was necessary to measure the stress-strain characteristics at different values of the strain rate. These curves were obtained by the dynamic tests using the Split-Hopkinson pressure bar method.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of computational mechanics 2021

ISBN

978-80-261-1059-0

ISSN

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e-ISSN

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Počet stran výsledku

3

Strana od-do

152-154

Název nakladatele

Západočeská univerzita v Plzni

Místo vydání

Plzeň

Místo konání akce

Srní

Datum konání akce

8. 11. 2021

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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