scholarly journals Comment on “Nanoindentation models and Young's modulus of monolayer graphene: A molecular dynamics study” [Appl. Phys. Lett. 102, 071908 (2013)]

2017 ◽  
Vol 110 (17) ◽  
pp. 176101 ◽  
Author(s):  
Congrui Jin
2013 ◽  
Vol 102 (7) ◽  
pp. 071908 ◽  
Author(s):  
Xinjun Tan ◽  
Jian Wu ◽  
Kaiwang Zhang ◽  
Xiangyang Peng ◽  
Lizhong Sun ◽  
...  

2017 ◽  
Vol 110 (17) ◽  
pp. 176102
Author(s):  
Xinjun Tan ◽  
Jian Wu ◽  
Kaiwang Zhang ◽  
Xiangyang Peng ◽  
Lizhong Sun ◽  
...  

Author(s):  
Mohsen Motamedi ◽  
AH Naghdi ◽  
SK Jalali

Composite materials have become popular because of high mechanical properties and lightweight. Aluminum/carbon nanotube is one of the most important metal composite. In this research, mechanical properties of aluminum/carbon nanotube composite were obtained using molecular dynamics simulation. Then, effect of temperature on stress–strain curve of composite was studied. The results showed by increasing temperature, the Young’s modulus of composite was decreased. More specifically increasing the temperature from 150 K to 620 K, decrease the Young’s modulus to 11.7%. The ultimate stress of composite also decreased by increasing the temperature. A continuum model of composite was presented using finite element method. The results showed the role of carbon nanotube on strengthening of composite.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Qing-Sheng Yang ◽  
Bing-Qi Li ◽  
Xiao-Qiao He ◽  
Yiu-Wing Mai

This investigation focuses on the design of functionalization configuration at the atomic level to determine the influence of atomic structure on the mechanical properties of functionalized carbon nanotubes (F-CNTs) and their composites. Tension and compressive buckling behaviors of different configurations of CNTs functionalized by H atoms are studied by a molecular dynamics (MD) method. It is shown that H-atom functionalization reduces Young’s modulus of CNTs, but Young’s modulus is not sensitive to the functionalization configuration. The configuration does, however, affect the tensile strength and critical buckling stress of CNTs. Further, the stress-strain relations of composites reinforced by nonfunctionalized and various functionalized CNTs are analyzed.


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