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Verlagslink DOI: 10.1016/j.jmps.2016.02.018
Titel: Scaling laws of nanoporous gold under uniaxial compression : effects of structural disorder on the solid fraction, elastic Poisson's ratio, Young's modulus and yield strength
Sprache: English
Autor/Autorin: Roschning, Benedikt 
Huber, Norbert 
Schlagwörter: Nanoporous gold;Scaling laws;Finite element method;Yield strength;Young’s modulus;Poisson's ratio;Mechanical behavior
Erscheinungsdatum: 27-Feb-2016
Verlag: Elsevier
Quellenangabe: Journal of the Mechanics and Physics of Solids (92): 55-71 (2016)
Zeitschrift oder Schriftenreihe: Journal of the mechanics and physics of solids 
Zusammenfassung (englisch): In this work the relationship between the structural disorder and the macroscopic mechanical behavior of nanoporous gold under uniaxial compression was investigated, using the finite element method. A recently proposed model based on a microstructure consisting of four-coordinated spherical nodes interconnected by cylindrical struts, whose node positions are randomly displaced from the lattice points of a diamond cubic lattice, was extended. This was done by including the increased density as result of the introduced structural disorder. Scaling equations for the elastic Poisson's ratio, the Young's modulus and the yield strength were determined as functions of the structural disorder and the solid fraction. The extended model was applied to identify the elastic–plastic behavior of the solid phase of nanoporous gold. It was found, that the elastic Poisson's ratio provides a robust basis for the calibration of the structural disorder. Based on this approach, a systematic study of the size effect on the yield strength was performed and the results were compared to experimental data provided in literature. An excellent agreement with recently published results for polymer infiltrated samples of nanoporous gold with varying ligament size was found.
URI: http://tubdok.tub.tuhh.de/handle/11420/1734
DOI: 10.15480/882.1731
ISSN: 1873-4782
Institut: Werkstoffphysik und -technologie M-22 
Dokumenttyp: (wissenschaftlicher) Artikel
Sponsor / Fördernde Einrichtung: Deutsche Forschungsgemeinschaft within SFB 986 "M3"
Projekt: project B4 
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