Atomistically-informed Continuum Modeling of Damage Mechanisms in Radially-grown CNT Nanocomposites

摘要

A micromechanical modeling framework that integrates an interphase damage modelis used to study damage evolution, and failure in radially-grown carbon nanotube(CNT) reinforced nanocomposites. The atomistically-informed damage model isdeveloped using the continuum damage mechanics approach with damage evolutionequations derived using molecular dynamics simulations. The developed damagemodel is integrated with a high-fidelity micromechanical analysis and captures theunderlying physical behavior that could be attributed to the enhancement of the out-ofplaneproperties at the higher length scales. To illustrate the effects ofnanoarchitecture, the response of the radially-grown CNT nanocomposite is comparedwith that of the traditional carbon fiber reinforced polymer (CFRP) composite.