| Titre : |
Numerical simulation of tensile residual stresses in SWCNT-reinforced polymer composites |
| Type de document : |
texte imprimé |
| Auteurs : |
M. R. Soleimany, Auteur ; Majid Jamal-Omidi, Auteur ; S. M. Nabavi, Auteur ; Majid Tavakolian, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 13-25 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Composites à fibres de carbone -- Propriétés mécaniques
Contraintes résiduelles
Polyéthylène
Polymères -- Propriétés mécaniques
Simulation par ordinateur
Traction (mécanique)
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The residual stresses play a significant role in the mechanical properties and strengthening capability of nanocomposites. The present research aims to numerically investigate the residual stress relaxation in nanotube-reinforced polymers in response to mechanical tensile loading. The systems under study consist of the armchair and zigzag single-walled carbon nanotubes (SWCNT) embedded in a polymer matrix. The nanotubes and polymer matrix are assumed to be bonded by van der Waals interactions based on the Lennard-Jones (L-J) potential at the interface. The interactions between carbon atoms in the nanotube and nodes in the polymer matrix are modelled by equivalent springs. In order to evaluate the analysis of elastic-perfectly plastic using finite element (FE) modelling, first, relaxation of the plastic residual stresses on steel hemisphere in contact with a rigid flat surface was examined in a loading-unloading cycle and verified with available data. Afterwards, the residual stress relaxation in nanotubes with different space-frame structures was computed due to displacement-controlled loading. Finally, the stress state and the plastic residual stresses in the nanocomposite for different carbon nanotube content were analyzed and discussed during loading and unloading. Regarding the effect of tensile stress, it was revealed that nanotube structures have significant effects on the residual stresses created in the nanocomposite. |
| Note de contenu : |
- Material properties of SWCNTs
- Validation of simulation pProcess
- Numerical simulation of residual stress in SWCNT
- Residual stress analysis in a SWCNT-reinforced polymer nanocomposite
- Table 1 : Tensile properties of CNTs (Wernik and Meguid, 2010)
- Table 2 : Material properties used in the Jackson et al. (2005) study
- Table 3 : Comparison of residual stress obtained from numerical estimation and available result
- Table 4 : Mechanical properties of polyethylene
- Table 5 : The maximum von-Mises stress and residual stress value for various armchair SWCNT structures
- Table 6 : The maximum von-Mises stress and residual stress value for various zigzag SWCNT structures
- Table 7 : The maximum von-Mises stress and residual stress value for SWCNT-reinforced polymer composites with various armchair structures |
| DOI : |
https://doi.org/10.1515/ipp-2020-3957 |
| En ligne : |
https://drive.google.com/file/d/1TiikaZ9_I7HOYQfjEA7JEe169IA9I7Z8/view?usp=shari [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36342 |
in INTERNATIONAL POLYMER PROCESSING > Vol. 36, N° 1 (2021) . - p. 13-25
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