Investigation of damage mechanisms in CNT nanocomposites using multiscale analysis
eScholarship, University of California, 2017
Online
academicJournal
This paper examines microscale and sub-microscale damage mechanisms in carbon nanotube (CNT) reinforced nanocomposites. A multiscale modeling framework with a damage model developed from molecular dynamics simulation, is employed to study the physical mechanisms of damage initiation and propagation in CNT nanocomposites at the sub-microscale. Two CNT arrangements, randomly dispersed and entangled agglomerates, are examined. This investigation offers insights into damage properties of particular configurations of CNTs in a polymer matrix, in addition to specific understanding related to damage concentration effects around the filler material at the sub-microscale. High spatial CNT concentration differential is observed to affect damage initiation and rate of damage. It is further shown to result in sub-microscale crack initiation at low global strains, a phenomenon that is also observed at agglomeration boundaries, which results in CNT agglomerations to behave as crack initiation sites.
Titel: |
Investigation of damage mechanisms in CNT nanocomposites using multiscale analysis
|
---|---|
Autor/in / Beteiligte Person: | Rai, A ; Subramanian, N ; Chattopadhyay, A |
Link: | |
Veröffentlichung: | eScholarship, University of California, 2017 |
Medientyp: | academicJournal |
Schlagwort: |
|
Sonstiges: |
|