Multiscale damage analysis of carbon nanotube nanocomposite using a continuum damage mechanics approach

Ashwin Rai, Nithya Subramanian, Bonsung Koo, Aditi Chattopadhyay

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

A multiscale-modeling framework is presented to understand damage and failure response in carbon nanotube reinforced nanocomposites. A damage model is developed using the framework of continuum damage mechanics with a physical damage evolution equation inspired by molecular dynamics simulations. This damage formulation is applied to randomly dispersed carbon nanotube reinforced nanocomposite unit cells with periodic boundary conditions to investigate preferred sites and the tendency towards damage. The continuum model is seen as successfully capturing much of the unique nonlinear trends observed in the molecular dynamics simulations in a volume 1000 times greater than the molecular dynamics unit cell. Additionally, application of the damage model to the continuum unit cell revealed insights into the failure of carbon nanotube reinforced nanocomposites at the sub-microscale.

Original languageEnglish (US)
Pages (from-to)847-858
Number of pages12
JournalJournal of Composite Materials
Volume51
Issue number6
DOIs
StatePublished - Mar 1 2017

Keywords

  • Carbon nanotubes
  • damage mechanics
  • molecular dynamics
  • multiscale modeling

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Chemistry

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