Mechanics of Axial Compression of Single and Multi-Wall Carbon Nanotubes

[+] Author and Article Information
A. Pantano, M. C. Boyce, D. M. Parks

Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA

J. Eng. Mater. Technol 126(3), 279-284 (Jun 29, 2004) (6 pages) doi:10.1115/1.1752926 History: Received March 03, 2003; Revised March 01, 2004; Online June 29, 2004
Copyright © 2004 by ASME
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Contour plots of the inter-wall pressure on wall no. 8 are shown in the left column and axial sections of the deformed configurations are shown in the right column, at the indicated axial strains for an arc of 90 deg along the circumference of the tube and a length in the axial direction that is twice the final wavelength, λ
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Distribution of the inter-wall pressure, in N/nm2 , on the central portion of wall no. 8 due to the interaction with the outermost wall, no. 9, at (a) εaxial=1.66 percent and (b) εaxial=3.7 percent
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Axial compression of a nine-walled carbon nanotube. Axial section of the deformed configurations at the macroscopic axial strain of (a) 1.66 percent and (b) 2.1 percent.
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Axial compression of a nine-walled carbon nanotube: (a) the deformed configuration, and (b) the axial stress distribution of the outermost surface of each wall at a macroscopic axial strain of 2.1 percent; light regions indicate high compressive stress
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Axial compression of single wall carbon nanotubes—load versus macroscopic axial strain, εaxial=Δ/L. The deformed configurations at the indicated stages are shown for each simulation.
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Axial compression of nine-walled carbon nanotubes. The deformed configurations at εaxial=3.7 percent are shown for (a) a vdW interaction reduced in strength by one-half, (b) the actual vdW interaction, and (c) a vdW interaction of twice the actual strength.




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