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Statements

Subject Item
n2:RIV%2F68407700%3A21110%2F14%3A00222259%21RIV15-MSM-21110___
rdf:type
skos:Concept n12:Vysledek
rdfs:seeAlso
http://dx.doi.org/10.4203/ccp.106
dcterms:description
The paper is focused on modeling and simulation of deformation behavior of a sandwich structure composed of closed-cell metal foam, expanded polystyren and plastic foil. Such structure is intended to be used for energy absorbing application like motorcycle helmets. At first, individual materials as well as sandwich panels were tested in a drop tower for different impact velocities to generate high strain rate conditions. Digital image correlation method was employed to receive stress-strain curves at three impact speeds. At second, virtual experiments with selected strain rate sensitive constitutive models were performed to best fit the experimental results. Good correlation between experimental and numerical results was achieved with Chang’s continuum material model for low density foams. Parameters of the model were identified directly from the experimental stress-strain curves. Finally, continuum finite element simulations of a sandwich structure were performed and compared with experimental results. The results show the same deformation mechanism where the polystyren layer deforms prior to Alporas foam core. However, the overall response exhibits significantly higher stresses compared to experimental results. The paper is focused on modeling and simulation of deformation behavior of a sandwich structure composed of closed-cell metal foam, expanded polystyren and plastic foil. Such structure is intended to be used for energy absorbing application like motorcycle helmets. At first, individual materials as well as sandwich panels were tested in a drop tower for different impact velocities to generate high strain rate conditions. Digital image correlation method was employed to receive stress-strain curves at three impact speeds. At second, virtual experiments with selected strain rate sensitive constitutive models were performed to best fit the experimental results. Good correlation between experimental and numerical results was achieved with Chang’s continuum material model for low density foams. Parameters of the model were identified directly from the experimental stress-strain curves. Finally, continuum finite element simulations of a sandwich structure were performed and compared with experimental results. The results show the same deformation mechanism where the polystyren layer deforms prior to Alporas foam core. However, the overall response exhibits significantly higher stresses compared to experimental results.
dcterms:title
Simulation of an Impact Test of Composite with Closed Cell Aluminium Foam Simulation of an Impact Test of Composite with Closed Cell Aluminium Foam
skos:prefLabel
Simulation of an Impact Test of Composite with Closed Cell Aluminium Foam Simulation of an Impact Test of Composite with Closed Cell Aluminium Foam
skos:notation
RIV/68407700:21110/14:00222259!RIV15-MSM-21110___
n3:aktivita
n11:S n11:P
n3:aktivity
P(GAP105/12/0824), S
n3:dodaniDat
n7:2015
n3:domaciTvurceVysledku
n21:3008142 n21:8651477 n21:4601106
n3:druhVysledku
n18:D
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n22:predkladatel
n3:idSjednocenehoVysledku
44969
n3:idVysledku
RIV/68407700:21110/14:00222259
n3:jazykVysledku
n20:eng
n3:klicovaSlova
aluminium foam; Alporas; polystyrene; modeling; finite element method; impact test; energy absorption; high strain rate
n3:klicoveSlovo
n4:polystyrene n4:modeling n4:aluminium%20foam n4:energy%20absorption n4:high%20strain%20rate n4:finite%20element%20method n4:Alporas n4:impact%20test
n3:kontrolniKodProRIV
[C21E90289618]
n3:mistoKonaniAkce
Neapol
n3:mistoVydani
Stirling
n3:nazevZdroje
PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY
n3:obor
n23:JI
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
6
n3:projekt
n14:GAP105%2F12%2F0824
n3:rokUplatneniVysledku
n7:2014
n3:tvurceVysledku
Králík, Vlastimil Jiroušek, Ondřej Zlámal, Petr Jíra, Aleš Němeček, Jiří Koudelka, Petr
n3:typAkce
n19:WRD
n3:zahajeniAkce
2014-09-02+02:00
s:issn
1759-3433
s:numberOfPages
21
n16:doi
10.4203/ccp.106
n17:hasPublisher
Civil-Comp Press Ltd
n13:isbn
978-1-905088-61-4
n5:organizacniJednotka
21110