Molecular dynamics simulations of buckling-induced plasticity

Molecular dynamics simulations of thin film buckling demonstrate that high compressive stresses are localized in the straight-sided wrinkle leading to the nucleation of dislocations, which are mobile and plastically release a large amount of the strain. As a consequence, the maximum deflection deter...

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Bibliographic Details
Published in:Applied physics letters 2008-12, Vol.93 (22), p.221904-221904-3
Main Authors: Durinck, Julien, Coupeau, Christophe, Colin, Jérôme, Grilhé, Jean
Format: Article
Language:English
Subjects:
Condensed Matter
Materials Science
Physics
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Summary:Molecular dynamics simulations of thin film buckling demonstrate that high compressive stresses are localized in the straight-sided wrinkle leading to the nucleation of dislocations, which are mobile and plastically release a large amount of the strain. As a consequence, the maximum deflection determined in the framework of elasticity theory is found to be overestimated. Finally, the resulting plastic deformation has been estimated and included in the expression of the deflection.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3033552