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Author:

Cheng, C. (Cheng, C..) | Yan, J. (Yan, J..) | Zhu, Z. (Zhu, Z..) | Tan, X. (Tan, X..)

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EI Scopus

Abstract:

Molecular dynamics (MD) method was used to simulate the bending deformation of graphene (GNs)/Al layered beams under transverse load and longitudinal compression, and the influencing factors of the bending characteristics of the laminated beams were investigated. It can be seen from the bending results under transverse load that the bending stiffness of the layered beam decreases with the increase of the number of GNs layers due to the effect of interlayer action. The bending mechanism of GNs/Al layered beams is not simply the addition of GNs and Al component properties, which makes it difficult to apply classical continuum mechanics to high anisotropy layered materials. In uniaxial longitudinal compression, GNs makes the slender beam more prone to buckling before plastic deformation. The critical stress (σcr) and critical strain (εcr) of buckling are mainly affected by the thickness of the repeating layer in the layered beam, especially when the thickness of the repeating layer is less than 2 nm, the σcr and εcr decrease sharply. In flexural deformation after buckling, the tension-pressure asymmetry of dislocation nucleation causes atomic defects to occur only from the compressed place. As the number of GNs increases and the distance between repeated layers decreases, the flexibility of the layered beam increases. © 2023 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

Keyword:

bending stiffness graphene/Al layered beam molecular dynamics buckling bending deformation

Author Community:

  • [ 1 ] [Cheng C.]School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, China
  • [ 2 ] [Cheng C.]State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang, 330013, China
  • [ 3 ] [Yan J.]State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang, 330013, China
  • [ 4 ] [Yan J.]Beijing Key Laboratory of Nonlinear Vibration and Strength of Mechanical Structures, College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100022, China
  • [ 5 ] [Zhu Z.]School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, China
  • [ 6 ] [Zhu Z.]State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang, 330013, China
  • [ 7 ] [Tan X.]School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, China
  • [ 8 ] [Tan X.]State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang, 330013, China

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Source :

Acta Materiae Compositae Sinica

ISSN: 1000-3851

Year: 2023

Issue: 12

Volume: 40

Page: 6897-6909

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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