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Publisher DOI: 10.1016/j.scriptamat.2015.08.002
Title: Elastic and plastic poisson’s ratios of nanoporous gold
Language: English
Authors: Lührs, Lukas 
Soyarslan, Celal 
Markmann, Jürgen 
Bargmann, Swantje 
Weissmüller, Jörg 
Keywords: nanoporous metal;mechanical properties;nanostructure;porous material;finite element analysis
Issue Date: 19-Aug-2015
Source: Scripta Materialia (110): 65-69 (2016)
Journal or Series Name: Scripta Materialia 
Abstract (english): We explore the elastic and plastic Poisson’s ratios, mE and mP, of nanoporous gold, using digital image correlation during compression experiments including load/unload segments. The two coefficients differ significantly, with mE independent of the ligament size, L, and with a trend for mP / L at not too large L. Disorder in the network of ligaments may explain why mE is smaller than predicted by lattice-based models. Finite element simulations, based on the Deshpande–Fleck constitutive law, validate the data analysis. The constitutive law captures work-hardening and transverse flow of nanoporous gold in good agreement with the experiment.
DOI: 10.15480/882.1627
ISSN: 1359-6462
Institute: Werkstoffphysik und -technologie M-22 
Type: (wissenschaftlicher) Artikel
Project: SFB 986: Teilprojekt B2 - Feste und leichte Hybridwerkstoffe auf Basis nanoporöser Metalle 
SFB 986: Teilprojekt B6 - Modellierung und Simulation der Interphaseneigenschaften von Kompositwerkstoffen aus Metall und Polymer auf der Nanoskala 
License: In Copyright In Copyright
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