Micromechanics-based phase field fracture modelling of CNT composites
Metadatos
Mostrar el registro completo del ítemEditorial
Elsevier
Materia
Carbon nanotubes Composite materials Crack propagation Finite Element Analysis Fracture toughness Micromechanics Phase field
Fecha
2022-03-12Referencia bibliográfica
Leonel Quinteros, Enrique García-Macías, Emilio Martínez-Pañeda, Micromechanics-based phase field fracture modelling of CNT composites, Composites Part B: Engineering, Volume 236, 2022, 109788, ISSN 1359-8368, [https://doi.org/10.1016/j.compositesb.2022.109788]
Patrocinador
National Agency for Research and Development CHILE/2020-72210161; UK Research & Innovation (UKRI) MR/V024124/1Resumen
We present a novel micromechanics-based phase field approach to model crack initiation and propagation
in carbon nanotube (CNT) based composites. The constitutive mechanical and fracture properties of the
nanocomposites are first estimated by a mean-field homogenisation approach. Inhomogeneous dispersion of
CNTs is accounted for by means of equivalent inclusions representing agglomerated CNTs. Detailed parametric
analyses are presented to assess the effect of the main micromechanical properties upon the fracture behaviour
of CNT-based composites. The second step of the proposed approach incorporates the previously estimated
constitutive properties into a phase field fracture model to simulate crack initiation and growth in CNT-based
composites. The modelling capabilities of the framework presented is demonstrated through three paradigmatic
case studies involving mode I and mixed mode fracture conditions.