Elastic and plastic poisson’s ratios of nanoporous gold

Lührs, Lukas; Soyarslan, Celal; Markmann, Jürgen; Bargmann, Swantje; Weissmüller, Jörg

doi:10.1016/j.scriptamat.2015.08.002

Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.1627

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.
URI:	http://tubdok.tub.tuhh.de/handle/11420/1630
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
Appears in Collections:	Publications with fulltext