|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Design and Simulation of Materials (CDSM 2018): Atomistic Simulations
||L-15: On the Deformation Mechanisms and Scaling Law of Three-dimensional Nanoporous Metals
||Lijie He, Niaz Abdolrahim, Haomin Liu
|On-Site Speaker (Planned)
Nanoporous (NP) metals are a class of novel nanomaterials featuring randomly distributed and interconnected one dimensional ligaments in a three-dimensional network. Experiments suggest that NP metallic structure shows brittleness under tensile loading, despite of its ductile constituent ligaments. In the present study, a series of bicontinuous open-cell porous copper microstructures with different morphology properties are generated through Monte Carlo method and used in molecular dynamic (MD) simulation to investigate the atomic mechanisms associated with deformation process. The results show several control parameters including relative density, ligament sizes, Euler characteristic of the structure need to be taken into consideration when numerically modelling the mechanical properties of NP metal structures. An additional series of MD simulation has been performed onto single nanowires with different morphology properties. The results are compared to the study of NP metallic structures to quantify the 3D network effect.
||Planned: Supplemental Proceedings volume