Molecular Dynamics Study of the Tensile Deformation on Aluminum nanorod

DOI

10.2991/icsma-16.2016.28How to use a DOI?

Keywords

Molecular dynamics, Tensile deformation, Nanorod.

Abstract

To study the deformation behavior of the nanorods and further explore the deformation difference among nanorods, nanowires and bulk materials, the uniaxial tension of aluminum nanorod under different stretching rate was conducted by the molecular dynamics method. The effect of stretching rate on the tensile deformation of nanorod was investigated by considering the variation of the energy, engineering stress, yield stress, Youngs modulus changes with the strain. Further the deformation mechanism was discussed based on the study of the snapshots of the microstructure transformaiton at different stages. It was found that, when the stretching rate is under 9.26ž109 s-1, the deformation behavior of the aluminum nanorod was similar with that of aluminum nanowire and crystal at room temperature, and presents one necking fracture mechanism. We can obtain high yield strength and yield strain. However, when the strain rate exceeding 9.26ž109 s-1, the nanorod fractured near the boundaries and presents two necking mechanism, which is greatly different with that of the nano-wire or bulk materials.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yongli Liu
AU  - Dongkai Shao
AU  - Yuntao Zeng
AU  - Weike Wang
AU  - Mingqi Lu
PY  - 2016/12
DA  - 2016/12
TI  - Molecular Dynamics Study of the Tensile Deformation on Aluminum nanorod
BT  - Proceedings of the 2016 4th International Conference on Sensors, Mechatronics and Automation (ICSMA 2016)
PB  - Atlantis Press
SP  - 139
EP  - 146
SN  - 1951-6851
UR  - https://doi.org/10.2991/icsma-16.2016.28
DO  - 10.2991/icsma-16.2016.28
ID  - Liu2016/12
ER  -