Back to Search
Start Over
A Three Dimensional Unit Cell Model for the Analysis of Thermal Residual Stresses in Polymer Composites Reinforced with Wavy Carbon Nanotubes
- Source :
- MRS Advances. 5:1739-1748
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- This paper presents a numerical approach to predict the thermal residual stresses in polymer nanocomposites reinforced with a periodic array of wavy carbon nanotubes. A three dimensional unit cell model is established to accurately account for the waviness of the nanotube. Periodic boundary conditions are determined for the unit cell with a pair of curved surfaces. Appropriate methods to evaluate the macroscopic stresses and strains are also determined for the unit cell model in which the interior pores of the nanotubes are explicitly included. It is demonstrated that the macroscopic behavior of the nanocomposites is orthotropic due to the symmetries manifested. By employing material properties of the two constituents, the thermal residual stresses and strains induced by high temperature curing and cooling-down are predicted for an epoxy/wavy-nanotube composite. It is also demonstrated that the curing process tends to increase the waviness of the nanotube and the waviness has a significant influence on the distribution of the microscopic residual stresses.
- Subjects :
- Nanotube
Materials science
microstructure
Composite number
02 engineering and technology
Carbon nanotube
010402 general chemistry
01 natural sciences
law.invention
Condensed Matter::Materials Science
thermal stresses
law
Residual stress
Periodic boundary conditions
General Materials Science
composite
Composite material
Waviness
Mechanical Engineering
modeling
Epoxy
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
Mechanics of Materials
visual_art
visual_art.visual_art_medium
0210 nano-technology
Material properties
Subjects
Details
- ISSN :
- 20598521
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- MRS Advances
- Accession number :
- edsair.doi.dedup.....bfb8ee1a79db239bd711b9923c5621e3