Molecular Simulations of Cyclic Loading Behavior of Carbon Nanotubes Using the Atomistic Finite Element Method
Joint Authors
Gutierrez, Marte S.
Wang, Jianfeng
Source
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-06-17
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Engineering Sciences and Information Technology
Chemistry
Civil Engineering
Abstract EN
The potential applications of carbon nanotubes (CNT) in many engineered bionanomaterials and electromechanical devices have imposed an urgent need on the understanding of the fatigue behavior and mechanism of CNT under cyclic loading conditions.
To date, however, very little work has been done in this field.
This paper presents the results of a theoretical study on the behavior of CNT subject to cyclic tensile and compressive loads using quasi-static molecular simulations.
The Atomistic Finite Element Method (AFEM) has been applied in the study.
It is shown that CNT exhibited extreme cyclic loading resistance with yielding strain and strength becoming constant within limited number of loading cycles.
Viscoelastic behavior including nonlinear elasticity, hysteresis, preconditioning (stress softening), and large strain have been observed.
Chiral symmetry was found to have appreciable effects on the cyclic loading behavior of CNT.
Mechanisms of the observed behavior have been revealed by close examination of the intrinsic geometric and mechanical features of tube structure.
It was shown that the accumulated residual defect-free morphological deformation was the primary mechanism responsible for the cyclic failure of CNT, while the bond rotating and stretching experienced during loading/unloading played a dominant role on the strength, strain and modulus behavior of CNT.
American Psychological Association (APA)
Wang, Jianfeng& Gutierrez, Marte S.. 2009. Molecular Simulations of Cyclic Loading Behavior of Carbon Nanotubes Using the Atomistic Finite Element Method. Journal of Nanomaterials،Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-486097
Modern Language Association (MLA)
Wang, Jianfeng& Gutierrez, Marte S.. Molecular Simulations of Cyclic Loading Behavior of Carbon Nanotubes Using the Atomistic Finite Element Method. Journal of Nanomaterials No. 2009 (2009), pp.1-9.
https://search.emarefa.net/detail/BIM-486097
American Medical Association (AMA)
Wang, Jianfeng& Gutierrez, Marte S.. Molecular Simulations of Cyclic Loading Behavior of Carbon Nanotubes Using the Atomistic Finite Element Method. Journal of Nanomaterials. 2009. Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-486097
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-486097