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

Ngô, B.-N. D. and Roschning, B. and Albe, K. and Weissmüller, J. and Markmann, J. (2017):
On the origin of the anomalous compliance of dealloying-derived nanoporous gold.
In: Scripta Materialia, pp. 74-77, 130, ISSN 13596462,
[Online-Edition: https://doi.org/10.1016/j.scriptamat.2016.11.006],
[Article]

Abstract

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.

Item Type: Article
Erschienen: 2017
Creators: Ngô, B.-N. D. and Roschning, B. and Albe, K. and Weissmüller, J. and Markmann, J.
Title: On the origin of the anomalous compliance of dealloying-derived nanoporous gold
Language: English
Abstract:

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.

Journal or Publication Title: Scripta Materialia
Volume: 130
Uncontrolled Keywords: Nanoporous, Molecular dynamics, Finite element modeling, Elasticity of nanomaterials, Surface effects
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 13 Jul 2017 08:26
Official URL: https://doi.org/10.1016/j.scriptamat.2016.11.006
Identification Number: doi:10.1016/j.scriptamat.2016.11.006
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