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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Numerical analysis of plastic deformation mechanisms in polycrystallinencopper under cyclic loading with different frequencies
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20306 - Audio engineering, reliability analysis

Project
<a href="/en/project/EH22_008%2F0004634" target="_blank" >EH22_008/0004634: Mechanical engineering of biological and bio-inspired systems</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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