10.15480/882.1627
Lührs, Lukas
Lukas
Lührs
0000-0001-9004-4389
1156489261
Soyarslan, Celal
Celal
Soyarslan
0000-0003-1029-237X
1138057622
Markmann, Jürgen
Jürgen
Markmann
0000-0002-1384-0581
1156300916
Bargmann, Swantje
Swantje
Bargmann
0000-0001-7403-7066
136307426
Weissmüller, Jörg
Jörg
Weissmüller
0000-0002-8958-4414
1051291577
Elastic and plastic poisson’s ratios of nanoporous gold
TUHH Universitätsbibliothek
2015
nanoporous metal
mechanical properties
nanostructure
porous material
finite element analysis
Ingenieurwissenschaften
TUHH Universitätsbibliothek
TUHH Universitätsbibliothek
2018-04-20
2018-04-20
2015-08-19
en
Journal Article
Scripta Materialia (110): 65-69 (2016)
http://tubdok.tub.tuhh.de/handle/11420/1630
urn:nbn:de:gbv:830-88220408
10.15480/882.1627
11420/1630
10.1016/j.scriptamat.2015.08.002
https://creativecommons.org/licenses/by-nc-nd/4.0/
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.
Deutsche Forschungsgemeinschaft (DFG)
https://doi.org/10.13039/501100001659
192346071
SFB 986: Teilprojekt B2 - Feste und leichte Hybridwerkstoffe auf Basis nanoporöser Metalle
Deutsche Forschungsgemeinschaft (DFG)
https://doi.org/10.13039/501100001659
192346071
SFB 986: Teilprojekt B6 - Modellierung und Simulation der Interphaseneigenschaften von Kompositwerkstoffen aus Metall und Polymer auf der Nanoskala
1359-6462
Scripta Materialia
2015