An equivalent orthotropic representation (EOR) of the nonlinear elastic behavior of multiwalled carbon nanotubes (MWCNTs) was developed based on a nested shell structural representation of MWCNTs. The EOR model was used together with the finite element method to simulate the large deformation of MWCNTs under bending, axial compression and radial compression. Results were compared with those of the nested shell model for four-, eight-, nine-, 14-, and 19-walled carbon nanotubes. The EOR model provides a dramatic improvement in computational efficiency and successfully quantitatively replicates the overall deformation behavior including the initial linear elastic behavior, the onset of local buckling, and the post-buckling compliance. The proposed EOR model together with the finite element method offers a computationally efficient method for simulating large and complex systems of MWCNTs.
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July 2007
Technical Papers
An Equivalent Orthotropic Representation of the Nonlinear Elastic Behavior of Multiwalled Carbon Nanotubes
M. Garg,
M. Garg
Department of Mechanical Engineering,
Massachusetts Institute of Technology
, Cambridge, MA 02139-4307
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A. Pantano,
A. Pantano
Department of Mechanical Engineering,
Massachusetts Institute of Technology
, Cambridge, MA 02139-4307; Department of Mechanical Engineering, Università degli Studi di Palermo
, Viale delle Scienze, 90128 Palermo, Italy
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M. C. Boyce
M. C. Boyce
Department of Mechanical Engineering,
e-mail: mcboyce@mit.edu
Massachusetts Institute of Technology
, Cambridge, MA 02139-4307
Search for other works by this author on:
M. Garg
Department of Mechanical Engineering,
Massachusetts Institute of Technology
, Cambridge, MA 02139-4307
A. Pantano
Department of Mechanical Engineering,
Massachusetts Institute of Technology
, Cambridge, MA 02139-4307; Department of Mechanical Engineering, Università degli Studi di Palermo
, Viale delle Scienze, 90128 Palermo, Italy
M. C. Boyce
Department of Mechanical Engineering,
Massachusetts Institute of Technology
, Cambridge, MA 02139-4307e-mail: mcboyce@mit.edu
J. Eng. Mater. Technol. Jul 2007, 129(3): 431-439 (9 pages)
Published Online: December 2, 2006
Article history
Received:
May 29, 2006
Revised:
December 2, 2006
Citation
Garg, M., Pantano, A., and Boyce, M. C. (December 2, 2006). "An Equivalent Orthotropic Representation of the Nonlinear Elastic Behavior of Multiwalled Carbon Nanotubes." ASME. J. Eng. Mater. Technol. July 2007; 129(3): 431–439. https://doi.org/10.1115/1.2744408
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