Numerical analysis of plastic deformation mechanisms in polycrystallinencopper under cyclic loading with different frequencies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00588198" target="_blank" >RIV/68081723:_____/24:00588198 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0142112324003827?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0142112324003827?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijfatigue.2024.108524" target="_blank" >10.1016/j.ijfatigue.2024.108524</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical analysis of plastic deformation mechanisms in polycrystallinencopper under cyclic loading with different frequencies

Popis výsledku v původním jazyce

The frequency of cyclic loading has a strong effect on the fatigue lifetime of materials. High loading frequenciesnallow reaching very high cycle fatigue regimes. The effects of cyclic loading with different frequencies arenstudied using the finite element method within the framework of crystal plasticity. The numerical study repre sents copper polycrystal that undergoes tension–compression loading with frequencies 80 Hz and 20 kHznrespectively. The spatial distributions of stresses, strains, and plastic slip are used for estimation of volumenfraction, morphology, and plasticity mechanism of persistent slip bands. The results show that at 80 Hz cyclicnloading, plasticity in persistent slip band cells is dominated by the creation and annihilation of dislocations whilenat 20 kHz cyclic loading, plasticity is driven by the back-and-forth movement of dislocations inside the persistentnslip band cells. The numerical study shows a correlation between amplitude and frequency of loading with spatialndistribution and morphology of persistent slip bands that can be related to the fatigue lifetime.

Název v anglickém jazyce

Numerical analysis of plastic deformation mechanisms in polycrystallinencopper under cyclic loading with different frequencies

Popis výsledku anglicky

The frequency of cyclic loading has a strong effect on the fatigue lifetime of materials. High loading frequenciesnallow reaching very high cycle fatigue regimes. The effects of cyclic loading with different frequencies arenstudied using the finite element method within the framework of crystal plasticity. The numerical study repre sents copper polycrystal that undergoes tension–compression loading with frequencies 80 Hz and 20 kHznrespectively. The spatial distributions of stresses, strains, and plastic slip are used for estimation of volumenfraction, morphology, and plasticity mechanism of persistent slip bands. The results show that at 80 Hz cyclicnloading, plasticity in persistent slip band cells is dominated by the creation and annihilation of dislocations whilenat 20 kHz cyclic loading, plasticity is driven by the back-and-forth movement of dislocations inside the persistentnslip band cells. The numerical study shows a correlation between amplitude and frequency of loading with spatialndistribution and morphology of persistent slip bands that can be related to the fatigue lifetime.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20306 - Audio engineering, reliability analysis

Projekt

<a href="/cs/project/EH22_008%2F0004634" target="_blank" >EH22_008/0004634: Strojní inženýrství biologických a bioinspirovaných systémů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

International Journal of Fatigue

ISSN

0142-1123

e-ISSN

1879-3452

Svazek periodika

188

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

108524

Kód UT WoS článku

001283323400001

EID výsledku v databázi Scopus

2-s2.0-85199464273