Wyszukiwarka
Continuum contact model for friction between graphene sheets that accounts for surface anisotropy and curvature
Abstrakt
Understanding the interaction mechanics between graphene layers and co-axial carbon nanotubes (CNTs) is essential for modeling graphene and CNT-based nanoelectromechanical systems. This work proposes a new continuum contact model to study interlayer interactions between curved graphene sheets. The continuum model is calibrated and validated using molecular dynamics (MD) simulations. These are carried out employing the reactive empirical bond order (REBO)+Lennard-Jones (LJ) potential to model the interactions within a sheet, while the LJ, Kolmogorov-Crespi (KC), and Lebedeva potentials are used to model the interactions between sheets. The continuum contact model is formulated for separation distances greater than 0.29 nm, when sliding contact becomes non-dissipative and can be described by a potential. In this regime, sheet deformations are sufficiently small and do not affect the sheet interactions substantially. This allows to treat the master contact surface as rigid, thus simplifying the contact formulation greatly. The model calibration is conducted systematically for a sequence of different stackings using existing and newly proposed ansatz functions. The calibrated continuum model is then implemented in a curvilinear finite element (FE) shell formulation to investigate the pull-out and twisting interactions between co-axial CNTs. The resisting pull-out forces and torques depend strongly on the chirality of the considered CNTs. The absolute differences between FE and MD results are very small, and can be attributed to model assumptions and loading conditions.
Cytowania
-
0
CrossRef
-
0
Web of Science
-
0
Scopus
Autorzy (3)
-
Aningi Mokhalingam
-
Shakti Gupta Prof.
Cytuj jako
Pełna treść
pełna treść publikacji nie jest dostępna w portalu
Słowa kluczowe
Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
-
PHYSICAL REVIEW B
nr 109,
ISSN: 2469-9950 - Język:
- angielski
- Rok wydania:
- 2024
- Opis bibliograficzny:
- Mokhalingam A., Gupta S., Sauer R.: Continuum contact model for friction between graphene sheets that accounts for surface anisotropy and curvature// PHYSICAL REVIEW B -, (2024), s.035435-
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1103/physrevb.00.005400
- Źródła finansowania:
-
- Publikacja bezkosztowa
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 47 razy
Publikacje, które mogą cię zainteresować
Contact with coupled adhesion and friction: Computational framework, applications, and new insights
- J. C. Mergel,
- J. Scheibert,
- R. Sauer
A chemo-mechano-thermodynamical contact theory for adhesion, friction, and (de)bonding reactions
- R. Sauer,
- T. X. Duong,
- K. K. Mandadapu
Thermal Buckling Analysis of Circular Bilayer Graphene sheets Resting on an Elastic Matrix Based on Nonlocal Continuum Mechanics
- M. Ahmad Pour,
- M. E. Golmakani,
- M. Malikan