Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F25%3A00602808" target="_blank" >RIV/68378297:_____/25:00602808 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68145535:_____/25:00602808 RIV/68407700:21260/25:00391020

Výsledek na webu

<a href="https://doi.org/10.1007/s42247-024-00973-x" target="_blank" >https://doi.org/10.1007/s42247-024-00973-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s42247-024-00973-x" target="_blank" >10.1007/s42247-024-00973-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling

Popis výsledku v původním jazyce

We studied compression of tetrachiral auxetic lattice manufactured using laser powder bed fusion from an aluminum alloy. Using an in-house loading device integrated with an X-ray CT scanner, experiments, including in-situ loading with time-lapse XCT imaging, were performed to obtain 3D images of the lattice to study its geometry, internal structure, and deformation through an in-house digital volume correlation. Numerical analyses based on the voxel model from XCT imaging and the tetrahedral model based on the design geometry were performed. The correlation between the experiment and the simulations was sought by comparing force-displacement diagrams and Poisson’s ratio. Results show that 3D printing of the lattice may lead to significantly different mechanical characteristics. An analysis of the difference between the design geometry and the manufactured lattice, coupled with porosity assessment, was performed to discuss the reasons for the discrepancies between the anticipated deformation response of the lattice and its real behavior.

Název v anglickém jazyce

Analysis of a 3D tetrachiral auxetic lattice under compression: Combining experimental and numerical approaches of 4D X-ray microtomography, digital volume correlation, and finite element modeling

Popis výsledku anglicky

We studied compression of tetrachiral auxetic lattice manufactured using laser powder bed fusion from an aluminum alloy. Using an in-house loading device integrated with an X-ray CT scanner, experiments, including in-situ loading with time-lapse XCT imaging, were performed to obtain 3D images of the lattice to study its geometry, internal structure, and deformation through an in-house digital volume correlation. Numerical analyses based on the voxel model from XCT imaging and the tetrahedral model based on the design geometry were performed. The correlation between the experiment and the simulations was sought by comparing force-displacement diagrams and Poisson’s ratio. Results show that 3D printing of the lattice may lead to significantly different mechanical characteristics. An analysis of the difference between the design geometry and the manufactured lattice, coupled with porosity assessment, was performed to discuss the reasons for the discrepancies between the anticipated deformation response of the lattice and its real behavior.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF16_019%2F0000766" target="_blank" >EF16_019/0000766: Inženýrské aplikace fyziky mikrosvěta</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Emergent Materials

ISSN

2522-5731

e-ISSN

2522-574X

Svazek periodika

8

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

QA - Stát Katar

Počet stran výsledku

20

Strana od-do

2345-2364

Kód UT WoS článku

001380479200001

EID výsledku v databázi Scopus

2-s2.0-85212525251