Use of Finite Element Simulation for Modeling Vertically Aligned Carbon Nanotube Arrays Based on Structural Mechanics Principles University of Kentucky

Format:

Conference/Event

Author/Creator:

Joseph, Joseph, author.

Contributor:

Lu, Y. Charles

Conference Name:

SAE 2013 World Congress & Exhibition (2013-04-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

Carbon nanomaterials such as vertically aligned carbon nanotubes arrays are emerging new materials that have demonstrated superior mechanical, thermal, and electrical properties. The carbon nanomaterials have the huge potential for a wide range of vehicular applications, including lightweight and multifunctional composites, high-efficiency batteries and ultracapacitors, durable thermal coatings, et cetera In order to design the carbon nanomaterials for various applications, it is very important to develop effective computational methods to model such materials and structures. The present work presents a structural mechanics approach to effectively model the mechanical behavior of vertically aligned carbon nanotube arrays. The carbon nanotube may be viewed as a geometrical space frame structure with primary bonds between any two neighboring atoms and thus can be modeled using three-dimensional beam elements. Effects of tube geometric factors (wall thickness and tube diameter) and material properties (Poisson's ratio) on mechanical properties of the nanotube structure were examined. Results show that the Young's modulus is inversely proportional to the nanotube wall thickness and Poisson's ratio. On the other hand, the Young's modulus and shear modulus exhibit nonlinear relationships with the nanotube diameter, id est, both moduli increase rapidly at smaller diameters but become stabilized at larger diameters. Compression test conducted on VACNT array shows linear behavior for the values of applied strains in the present case

Notes:

Vendor supplied data

Publisher Number:

2013-01-0645

Access Restriction:

Restricted for use by site license