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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/10969
Title: Analysis of mechanical properties of carbon nanotube reinforced polymer composites using multi-scale finite element modeling approach
Authors: Gupta A.K.
Harsha, Suraj Prakash
Published in: Composites Part B: Engineering
Abstract: In this paper, a multiscale finite element (FE) modeling approach is proposed for studying the pinhole defects in CNT reinforced polymer composites. Two configurations of CNT i.e. armchair (5, 5) and zigzag (9, 0) are selected for analyses wherein C-C bonds at atomic scale are modeled as Euler beam. The three dimensional solid elements are used for matrix material and square representative volume element (RVE) is constructed for the nanocomposite. These composite materials consist of aligned carbon nanotubes that are uniformly distributed within the matrix. The presence of chemical covalent bonding between functionalized CNT and matrix are modeled as elastic cross links. The influence of the pinhole defects on the nanocomposite are studied under axial load condition. It has been observed that with the increase in the number of atomic vacancies, the elastic modulus of the composite are reduced significantly. The effects of nanotubes chirality and composite stiffness ratio on the elastic properties are also analyzed in presence of atomic vacancies. It has been found from simulation results that zigzag nanotubes provides better reinforcement to composite compared to armchair nanotubes. © 2016 Elsevier Ltd. All rights reserved.
Citation: Composites Part B: Engineering (2016), 95(): 172-178
URI: https://doi.org/10.1016/j.compositesb.2016.04.005
http://repository.iitr.ac.in/handle/123456789/10969
Issue Date: 2016
Publisher: Elsevier Ltd
Keywords: A. Nano-structures
A. Polymer-matrix composites (PMCs)
B. Mechanical properties
C. Computational modelling
Carbon nanotube
ISSN: 13598368
Author Scopus IDs: 55628527476
6603548398
Author Affiliations: Gupta, A.K., Vibration and Noise Control Laboratory, Mechanical and Industrial Engineering Department, Indian Institute of Technology Roorkee, Roorkee, 247 667, India, Instruments Research and Development Establishment, DRDO, Dehradun, 248 008, India
Harsha, S.P., Vibration and Noise Control Laboratory, Mechanical and Industrial Engineering Department, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Corresponding Author: Gupta, A.K.; Instruments Research and Development Establishment, DRDOIndia; email: anandmechiitr@gmail.com
Appears in Collections:Journal Publications [ME]

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