Nanocrystallization in single-crystal copper under laser shock compression: A molecular dynamics study

2019 ◽  
Vol 752 ◽  
pp. 115-127 ◽  
Author(s):  
Qi-lin Xiong ◽  
Takayuki Kitamura ◽  
Zhenhuan Li
Keyword(s):  
Molecular Dynamics ◽  
Single Crystal ◽  
Shock Compression ◽  
Laser Shock ◽  
Single Crystal Copper

A reactive molecular dynamics study on the anisotropic sensitivity in single crystal α-cyclotetramethylene tetranitramine

RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 8609-8621 ◽  
Author(s):  
Ting-Ting Zhou ◽  
Yan-Geng Zhang ◽  
Jian-Feng Lou ◽  
Hua-Jie Song ◽  
Feng-Lei Huang
Keyword(s):  
Molecular Dynamics ◽  
Single Crystal ◽  
Shock Compression ◽  
Slip Plane ◽  
Reactive Molecular Dynamics ◽  
Cyclotetramethylene Tetranitramine

Anisotropic sensitivity is related to the different intermolecular steric arrangements across the slip plane induced by shock compression along various orientations.

The strength of single crystal copper under uniaxial shock compression at 100 GPa

2010 ◽  
Vol 22 (6) ◽  
pp. 065404 ◽  
Author(s):  
W J Murphy ◽  
A Higginbotham ◽  
G Kimminau ◽  
B Barbrel ◽  
E M Bringa ◽  
...  
Keyword(s):  
Single Crystal ◽  
Shock Compression ◽  
Single Crystal Copper

Deformation Mechanism of Diamond Nanocutting Single-Crystal Copper Using Molecular Dynamics Simulatio

2011 ◽  
Vol 239-242 ◽  
pp. 2775-2778
Author(s):  
Jia Xuan Chen ◽  
Ying Chun Liang ◽  
Xia Yu ◽  
Zhi Guo Wang ◽  
Zhen Tong
Keyword(s):  
Molecular Dynamics ◽  
Single Crystal ◽  
Cutting Force ◽  
Dislocation Loop ◽  
Deformation Mechanism ◽  
Molecular Dynamics Method ◽  
Parameter Method ◽  
Removal Mechanism ◽  
Single Crystal Copper ◽  
Dynamics Method

To study the removal mechanism of materials during nano cutting, molecular dynamics method is adopted to simulate single crystal copper nanomachining processes, and subsurface defects evolvements and chip forming regulation are analyzed by revised centro-symmetry parameter method and the ratios of the tangential cutting forceand the normal cutting force. The results show that there are different defects under different cutting depths. When cutting depths is shallower, there are dislocation loop nucleation in the subsurface of the workpiece beneath the tool; however, when the cutting depths is deeper, there are dislocations nucleation and slipping along {101} plane and (111) plane. In addition, both tangential cutting forceand the normal cutting force decrease as the cutting depths decreasing. When the ratios of the normal cutting force and the tangential cutting force is below 0.9, the chip will be formed.

Quasicontinuum Simulation of Uniaxial Tension of Single Crystal Copper Nanowire

2011 ◽  
Vol 694 ◽  
pp. 200-204
Author(s):  
Xing Lei Hu ◽  
Ying Chun Liang ◽  
Jia Xuan Chen ◽  
Hong Min Pen
Keyword(s):  
Mechanical Properties ◽  
Finite Element Method ◽  
Molecular Dynamics ◽  
Finite Element ◽  
Single Crystal ◽  
Size Effects ◽  
Tension Test ◽  
Quasicontinuum Method ◽  
Single Crystal Copper ◽  
Copper Nanowire

Quasicontinuum simulations of tension test of single crystal copper nanowire are performed to analyze deformation mechanism of tension process and size effects of mechanical properties. New tension models of nanowire are constructed by using quasicontinuum method, which has combined molecular dynamics and finite element method. Tension processes of three different length nanowires without notches and those with notches are simulated. Yield strength and elastic modulus are calculated according to the obtained load-displacement curves. Finally, the results show that the mechanical properties of copper nanowire have obvious size effect and the notches have obvious influence on the mechanical properties.

scholarly journals Single-crystal copper nanorods under uniaxial tensile load with different period by molecular dynamics

2017 ◽  
Vol 7 ◽  
pp. 2736-2741 ◽  
Author(s):  
Zailin Yang ◽  
Yu Zhang ◽  
Guowei Zhang ◽  
Yong Yang ◽  
Xizhi Wang
Keyword(s):  
Molecular Dynamics ◽  
Single Crystal ◽  
Tensile Load ◽  
Uniaxial Tensile ◽  
Single Crystal Copper ◽  
Copper Nanorods
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