TY - JOUR
T1 - On the Da Vinci size effect in tensile strengths of nanowires
T2 - a molecular dynamics study
AU - Zhao, Ziyu
AU - Liu, Jinxing
AU - Soh, Ai Kah
N1 - Publisher Copyright:
© 2018 Author(s).
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/1
Y1 - 2018/1
N2 - In recent decades, size effects caused by grain size, strain gradient, typical defects etc., have been widely investigated. Nevertheless, the dependence of tensile strength on the specimen length, addressed by Da Vinci around 500 hundred years ago, has received rather limited attention, even though it is one unavoidable question to answer if people attempt to bring materials' amazing nano-scale strengths up to macro-level. Therefore, we make efforts to study tensile behaviors of copper nanowires with a common cross-section and various lengths by employing the molecular dynamics simulations. Surprisingly, a strong size effect of Da Vinci type indeed arises. We have shown the influences of lattice orientation, temperature and prescribed notch on such a Da Vinci size effect. Two different theoretical explanations are briefly proposed for a qualitative understanding. Finally, a simple scaling rule is summarized to cover the tendencies observed.
AB - In recent decades, size effects caused by grain size, strain gradient, typical defects etc., have been widely investigated. Nevertheless, the dependence of tensile strength on the specimen length, addressed by Da Vinci around 500 hundred years ago, has received rather limited attention, even though it is one unavoidable question to answer if people attempt to bring materials' amazing nano-scale strengths up to macro-level. Therefore, we make efforts to study tensile behaviors of copper nanowires with a common cross-section and various lengths by employing the molecular dynamics simulations. Surprisingly, a strong size effect of Da Vinci type indeed arises. We have shown the influences of lattice orientation, temperature and prescribed notch on such a Da Vinci size effect. Two different theoretical explanations are briefly proposed for a qualitative understanding. Finally, a simple scaling rule is summarized to cover the tendencies observed.
UR - http://www.scopus.com/inward/record.url?scp=85040763449&partnerID=8YFLogxK
U2 - 10.1063/1.5006078
DO - 10.1063/1.5006078
M3 - Article
AN - SCOPUS:85040763449
SN - 2158-3226
VL - 8
JO - AIP Advances
JF - AIP Advances
IS - 1
M1 - 015315
ER -