Numerical modeling of auxetic lattices subjected to dynamic compression in SHPB

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F22%3A00364569" target="_blank" >RIV/68407700:21260/22:00364569 - isvavai.cz</a>
Result on the web
<a href="https://www.dymat.org/media/dymat-tm26.pdf" target="_blank" >https://www.dymat.org/media/dymat-tm26.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Numerical modeling of auxetic lattices subjected to dynamic compression in SHPB
Original language description
We demonstrate numerical modelling of the mechanical response of auxetic structures sub- jected to dynamic uniaxial compressive load- ing in split Hopkinson pressure bar (SHPB) at the strain rates of 1500 s-1 and 3000 s-1. The stress-strain characteristics as well as com- pressive strain dependent Poisson’s ratio of re-entrant honeycomb and missing-rib aux- etic lattices are assessed in LS-DYNA simula- tions with explicit time integration. Numer- ical results are supported by SHPB experi- ments utilized for both calibration of finite el- ement modeling and verification of the sim- ulations. The studied lattices were additively manufactured by laser powder bed fusion from 316L stainless steel. The numerical aspects of the simulations together with the influence of the 3D printing quality on the reliability of the results are discussed.
Czech name
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Czech description
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Project
<a href="/en/project/EF16_019%2F0000766" target="_blank" >EF16_019/0000766: Engineering applications of microworld physics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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