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

Result code in 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>
Result on the web
<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
—

Result language
angličtina
Original language name
Modeling of large deformation of the foam part using LS-DYNA
Original language description
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.
Czech name
—
Czech description
—

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)