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  4. Modeling of surface effects in crystalline materials within the framework of gradient crystal plasticity
 
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Modeling of surface effects in crystalline materials within the framework of gradient crystal plasticity

Citation Link: https://doi.org/10.15480/882.1745
Publikationstyp
Journal Article
Date Issued
2018-01-12
Sprache
English
Author(s)
Peng, Xiang-Long  
Husser, Edgar  
Huang, Gan-Yun  
Bargmann, Swantje  
Institut
Kontinuums- und Werkstoffmechanik M-15  
TORE-DOI
10.15480/882.1745
TORE-URI
http://tubdok.tub.tuhh.de/handle/11420/1748
Journal
Journal of the mechanics and physics of solids  
Volume
112
Start Page
508
End Page
522
Citation
Journal of the Mechanics and Physics of Solids (112): 508-522 (2018)
Publisher DOI
10.1016/j.jmps.2018.01.007
Scopus ID
2-s2.0-85041464667
Publisher
Elsevier
A finite-deformation gradient crystal plasticity theory is developed, which takes into ac- count the interaction between dislocations and surfaces. The model captures both ener- getic and dissipative effects for surfaces penetrable by dislocations. By taking advantage of the principle of virtual power, the surface microscopic boundary equations are obtained naturally. Surface equations govern surface yielding and hardening. A thin film under shear deformation serves as a benchmark problem for validation of the proposed model. It is found that both energetic and dissipative surface effects significantly affect the plastic be- havior.
Subjects
strain gradient
crystal plasticity
size effect
surface effects
surface yielding
DDC Class
620: Ingenieurwissenschaften
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by/4.0/
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