On the origin of the anomalous compliance of dealloying-derived nanoporous gold

Publikationstyp
Journal Article
Date Issued
2016-11-24
Sprache
English
Author(s)
Ngo, Dinh Bao Nam  orcid-logo
Roschning, Benedikt  
Albe, Karsten  
Weissmüller, Jörg  
Markmann, Jürgen 
Institut
Werkstoffphysik und -technologie M-22  
TORE-DOI
10.15480/882.2491
TORE-URI
http://hdl.handle.net/11420/3560
Journal
Scripta Materialia  
Volume
130
Start Page
74
End Page
77
Citation
Scripta Materialia (130): 74-77 (2017-03-15)
Publisher DOI
10.1016/j.scriptamat.2016.11.006
Scopus ID
2-s2.0-84997191053
Publisher
Elsevier Science
The origin of the anomalously compliant behavior of nanoporous gold is studied by comparing the elasticity obtained from molecular dynamics (MD) and finite element method (FEM) simulations. Both models yield a compliance, which is much higher than the predictions of the Gibson-Ashby scaling relation for metal foams and thus confirm the influence of other microstructural features besides the porosity. The linear elastic FEM simulation also yields a substantially stiffer response than the MD simulation, which reveals that nonlinear elastic behavior contributes decisively to the anomalous compliance of nanoporous gold at small structure size.
Subjects
Elasticity of nanomaterials
Finite element modeling
Molecular dynamics
Nanoporous
Surface effects
DDC Class
000: Allgemeines, Wissenschaft
Lizenz
http://rightsstatements.org/vocab/InC/1.0/
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