Evaluation of Mechanical Properties of Carbon Nanotubes Composite by Finite Element Method
Bhavesh Kanchan Bhagat , Dr R D Patil, Shri K K Chaudhari, Dr D A Warke
carbon nanotubes, finite element method, RVE, CNT
Carbon nanotubes (CNTs) possess extremely high stiffness, strength and resilience and may provide ultimate reinforcing materials for the development of nanocomposites. Evaluating the effective material properties of such nanoscale materials is one of the important tasks. Simulations using molecular dynamics and continuum mechanics models can play significant roles in this development. Currently the continuum approach seems to be the only feasible approach for such large scale analysis. The finite element method based continuum mechanics has been used to evaluate the mechanical properties of CNT based composites. The cylindrical as well as square representative volume element (RVEs) has been utilized in these simulations. Formulas to extract the effective material constants from solutions for the square RVEs under the axial stretch load is derived based on the elasticity theory. An extended rule of mixtures, based on the strength of materials theory for estimating the effective Young’s modulus in the axial direction of the RVE, is applied for comparisons of FEM results. It has been observed that the addition of the CNTs in a matrix at volume fractions of only about 3.6%, the stiffness of the composite is increased by 33% for long CNT at Et⁄Em = 10, whereas there is no much improvement in stiffness has been noticed in case of short CNTS at Et⁄Em =10. Effectiveness of composites is evaluated in terms of various dimensions like thickness, diameter and length of CNT. These results suggest that short CNTs in a matrix may not be as effective as long CNTs in reinforcing a composite. The comparisons of mechanical properties between cylindrical and square RVE have also been made for single CNT bases composite. Since the mechanical properties obtained through cylindrical RVE overestimates the youngs’s modulus thereby the square RVE is preferred for the simulations. The mechanical properties using cylindrical and square RVEs are also evaluated for multiple CNTs based composites and compared with each other.
Article Details
Unique Paper ID: 158205

Publication Volume & Issue: Volume 9, Issue 9

Page(s): 94 - 102
Article Preview & Download

Share This Article

Conference Alert


AICTE Sponsored National Conference on Smart Systems and Technologies

Last Date: 25th November 2021

SWEC- Management


Last Date: 7th November 2021

Go To Issue

Call For Paper

Volume 9 Issue 10

Last Date for paper submitting for March Issue is 25 March 2023

About Us

IJIRT.org enables door in research by providing high quality research articles in open access market.

Send us any query related to your research on editor@ijirt.org

Social Media

Google Verified Reviews

Contact Details

Email: editor@ijirt.org
Website: ijirt.org