کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9639653 | 1430411 | 2005 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An analytical molecular structural mechanics model for the mechanical properties of carbon nanotubes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: An analytical molecular structural mechanics model for the mechanical properties of carbon nanotubes An analytical molecular structural mechanics model for the mechanical properties of carbon nanotubes](/preview/png/9639653.png)
چکیده انگلیسی
An analytical molecular structural mechanics model for the prediction of mechanical properties of defect-free carbon nanotubes is developed by incorporating the modified Morse potential with an analytical molecular structural model. The developed model is capable of predicting Young's moduli, Poisson's ratios and stress-strain relationships of carbon nanotubes under tension and torsion loading conditions. Results on the mechanical properties of single-walled carbon nanotubes show that Young's moduli of carbon nanotubes are sensitive to the tube diameter and the helicity. Young's moduli of both armchair and zigzag carbon nanotubes increase monotonically and approach Young's modulus of graphite when the tube diameter is increased. The nonlinear stress-strain relationships for defect-free nanotubes have been predicted, which gives a good approximation on the ultimate strength and strain to failure of nanotubes. Armchair nanotubes exhibit higher tensile strength than zigzag nanotubes but their torsion strengths are identical based on the present study. The present theoretical investigation provides a very simple approach to predict the mechanical properties of carbon nanotubes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 42, Issues 11â12, June 2005, Pages 3075-3092
Journal: International Journal of Solids and Structures - Volume 42, Issues 11â12, June 2005, Pages 3075-3092
نویسندگان
J.R. Xiao, B.A. Gama, J.W. Jr.,