Prediction of Temperature-Dependent Mechanical Properties for SWCNT/Cu Nanocomposite Metamaterials: A Molecular Dynamics Study

Zhang, Haining; Fan, Yin; Shen, Hui‐Shen

doi:10.3390/nano13121885

Cited by 3 publications

(2 citation statements)

References 55 publications

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“…Carbon nanotubes (CNTs), as one of the ideal potential fillers for nanocomposites [11], exhibit superior excellent mechanical properties compared to carbon fiber. In the paper "Chirality-Dependent and Intrinsic Auxeticity for Single-Walled Carbon Nanotubes", Zhang et al [12] discovered the auxetic nature of CNTs.…”

Section: Nano Reinforcementmentioning

confidence: 99%

“…Their study showed that the auxeticity of CNTs was mainly determined by the stretch of C-C bonds, and the critical strain was achieved when the negative contribution of bond stretch to Poisson's ratio counteracted the positive contribution of angle variation. In their subsequent work, they proposed the atomic structures of auxetic nanocomposites [11] and verified their negative Poisson's ratios using MD methods. Moreover, the mechanical performance of auxetic nanocomposites greatly surpassed that of existing man-made reentrant auxetic materials [13,14].…”

Section: Nano Reinforcementmentioning

confidence: 99%

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Mechanical Performance of Advanced Composite Materials and Structures

Fan

2024

Materials

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Section: Nano Reinforcementmentioning

confidence: 99%

Section: Nano Reinforcementmentioning

confidence: 99%

Mechanical Performance of Advanced Composite Materials and Structures

Fan

2024

Materials

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Tension buckling and postbuckling of nanocomposite laminated plates with in-plane negative Poisson’s ratio

Shen,

Fan,

Wang

2024

Nanotechnology Reviews

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Mechanical metamaterials with negative Poisson’s ratio (NPR) have emerged as a novel class of engineering material, and have attracted increasing attention in various engineering sectors. Most studies available on the buckling problem of laminated plates with positive or NPR are those under uniaxial compression. Here, we report that the buckling phenomenon may occur for auxetic nanocomposite laminated plates under uniaxial tension when the unloaded edges of the plates are immovable. Two types of nanocomposites are considered, including graphene/Cu and carbon nanotube/Cu composites. Governing equations of the auxetic nanocomposite laminated plates are formulated based on the framework of Reddy’s higher-order shear deformation theory. In modeling, the von Kármán nonlinear strain–displacement relationship, temperature-dependent material properties, thermal effects, and the plate–substrate interaction are considered. The explicit analytical solutions for postbuckling of auxetic nanocomposite laminated plates subjected to uniaxial tension are obtained for the first time by employing a two-step perturbation approach. Numerical investigations are performed for tension buckling and postbuckling behaviors of auxetic nanocomposite laminated rectangular plates with in-plane NPR rested on an elastic substrate under temperature environments.

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A Molecular Dynamics Study on Auxetic Behaviors of Origami Graphene/Cu Nanocomposites

Na,

Zhang,

Fan

et al. 2024

J. Compos. Sci.

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Graphene is considered to be one of the most promising reinforcement phases for nanocomposites due to its unique two-dimensional planar structure with excellent mechanical properties. After the design of origami, the 2D material will obtain a negative Poisson’s ratio in the in-plane direction and become a metamaterial with unusual mechanical properties. Inspired by this, an origami pattern is adopted for graphene at an atomic scale using a molecular dynamics (MD) approach, and then origami graphene is embedded into a single-crystal copper matrix to obtain origami graphene/copper nanocomposites with auxetic behaviors. In the modeling, the periodic boundary condition is chosen to exhibit the Poisson’s ratio of the whole system. Under the isothermal–isobaric ensemble, the interactions between C-C, Cu-Cu, and C-Cu atoms are, respectively, determined by three potential functions: AIREBO, EAM, and LJ. The effect of the origami graphene/copper interfacial gap on the critical strain of incremental Poisson’s ratio, critical strain of engineering Poisson’s ratio, and moduli of the origami graphene/copper nanocomposites is studied to determine the optimum distance between the two phases. The influences of the mass fraction of carbon atom and temperature on those properties are discussed in detail after the MD model is confirmed.

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Prediction of Temperature-Dependent Mechanical Properties for SWCNT/Cu Nanocomposite Metamaterials: A Molecular Dynamics Study

Cited by 3 publications

References 55 publications

Mechanical Performance of Advanced Composite Materials and Structures

Mechanical Performance of Advanced Composite Materials and Structures

Tension buckling and postbuckling of nanocomposite laminated plates with in-plane negative Poisson’s ratio

A Molecular Dynamics Study on Auxetic Behaviors of Origami Graphene/Cu Nanocomposites

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