A study on nonlinear vibration behavior of CNT-based representative volume element

Jamal‐Omidi, Majid; ShayanMehr, Mahdi; Shokrollahi, Saeed; Rafiee, Roham

doi:10.1016/j.ast.2016.06.005

Cited by 10 publications

(7 citation statements)

References 60 publications

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“…It was found that CNT length influences the load transfer through the matrix-fibre interface. 186 Jamal-Omidi et al 187 around it. In another approach based on semi-continuum modelling, the CNT and interphase between CNT and polymer depicting interactions were modelled by replacing the C-C bond with equivalent beam elements.…”

Section: Role Of Fem In Modellingmentioning

confidence: 99%

Mechanical behaviour of carbon nanotube composites: A review of various modelling techniques

Sahu,

Harursampath,

Ponnusami

2023

Journal of Composite Materials

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This study aims to review and highlight the important modelling methodologies used for studying carbon nanotubes (CNTs) and their composites. Understanding appropriate modelling methods for specific applications is crucial as CNTs become integral in achieving lighter, multifunctional composite structures. This paper explores a range of techniques, including finite element modelling (FEM), Molecular Dynamics (MD), Molecular Structural Mechanics (MSM), as well as nonlocal models, and the Cauchy-Born (CB) rule. Emphasis is placed on factors such as interphase effects between CNTs and the matrix, bonding interactions, non-bonded van der Waals (vdW) forces, and dynamic behaviour. Multiscale modelling is extensively discussed as a pivotal approach for efficiently addressing various length scales in nanocomposites. Modelling of failure, damage and its propagation, delamination, and instabilities such as buckling and fracture have been highlighted, and research gaps have been pointed out.

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Section: Role Of Fem In Modellingmentioning

confidence: 99%

Mechanical behaviour of carbon nanotube composites: A review of various modelling techniques

Sahu,

Harursampath,

Ponnusami

2023

Journal of Composite Materials

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“…Heshmati et al [38] studied the effect of the wave and conglobation of carbon nanotubes on the vibration behavior of nanocomposite beams with functionally graded nanotubes using the Monte Carlo simulation method. Majid Jamal-Omidi et al [39] studied the nonlinear vibration behavior of nanocomposite beams. To determine the properties of nanocomposite beams, they analyzed the effect of carbon nanotubes distribution in polymers using the micromechanics analysis, and showed that the boundary conditions can have a great impact on the nonlinear frequency response of nanocomposite beams.…”

Section: Introductionmentioning

confidence: 99%

Free vibration analysis of functionally graded graphene-reinforced nanocomposite beams with temperature-dependent properties

Shahrjerdi

Yavari

2018

J Braz. Soc. Mech. Sci. Eng.

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A temperature-dependent vibration analysis is conducted for the functionally graded nanocomposite beams which are reinforced by graphene. Material properties are assumed to change along the beams in five different types based upon the graphene distribution with a specific function. The differential equations of motion are extracted and solved using the spectral numerical method for the beams under various boundary conditions. The effect of distribution of functionally graded nanocomposite in the thickness direction of beams on the frequency response of vibration, and the effect of various parameters on the vibration response has been examined, such as the distribution function of nanographene plates, weight percentage, dimensions of nanographene plates, temperature changes, and thickness ratio. The results are compared and validated with numerical and analytical results reported in references for manifold boundary conditions. It is seen that the increase of graphene weight percentage in all boundary conditions will cause an increase in the natural frequency of the beams.

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“…Many researchers have studied this behavior both experimentally and theoretically, and often consider sources of nonlinearity in vibrating systems due to the physical nonlinearity, geometric nonlinearity, and nonlinearity of boundary conditions (Sedighi et al., 2012). In several studies, geometric nonlinearity is considered in case of nonlinear transverse vibration (Eddanguir et al., 2012; Jamal-Omidi et al., 2016; Kumar et al., 2015; Rahmouni et al., 2013). In these circumstances, the system is under large deflection, which thus allows the study of free or forced vibrational behavior (Arafat, 1999; Malatkar, 2003; Motallebi et al., 2016; Nayfeh and Nayfeh, 1993; Oliveira and Greco, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…In the first group, nanoparticles improve the medium, such as polymers (Esbati and Irani, 2016; Jamal-Omidi et al., 2015a, 2015b, 2016; Shokrieh and Rafiee, 2010; Zhu et al., 2013), whereas in the other group, composite materials (fiber and resin) are reinforced by nanoparticles (Bekyarova et al., 2007; Thostenson et al., 2002; Zhang et al., 2009). Most of the studies on vibration behavior of nanocomposites are theoretical (Jamal-Omidi et al., 2016), and these studies focus on nanoparticles’ reinforced polymers (first group). For nanocomposites, in the field of experimental research, the modal analyses and damping characterizations are investigated by several researchers.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on the nonlinear free vibration response of epoxy and carbon fiber-reinforced composite containing single-walled carbon nanotubes

Jamal‐Omidi

ShayanMehr

2017

Journal of Vibration and Control

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In this paper, the effects of additives of a single-walled carbon nanotube (SWCNT) on the nonlinear free vibration of neat resin and carbon fiber reinforced polymer composites (CFRPs) are investigated experimentally. To establish this purpose a sensitive noncontact setup is designed and prepared. In order to obtain a proper SWCNT dispersion pattern, a simple multistage method is presented to fabricate and test nanocomposite beams. First, the increase in the Young's modulus of the nanocomposites by adding carbon nanotube is investigated using the mechanical bending test and validated with available test results. Next, the nonlinear free vibration behavior of cantilever beams under small to large-deflection is investigated. The results of the vibration tests indicate that the nonlinear vibration behavior of all models is close to homogenous materials with increasing SWCNT. The results also show that transverse initial excitation (displacement) imposed an axial load on the slender beams, which thus leads to an increase in the nonlinear frequency of oscillation. In addition, the increase in frequency bears a relation to the initial displacement. Also, large initial displacements, especially on models without carbon fiber (reinforced epoxy), cause that the convergence of frequencies under different initial excitation did not occur. The results of this study show that adding SWCNT can lead to convergences of frequencies’ hybrid composites and reinforced epoxy during final cycles.

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A study on nonlinear vibration behavior of CNT-based representative volume element

Cited by 10 publications

References 60 publications

Mechanical behaviour of carbon nanotube composites: A review of various modelling techniques

Mechanical behaviour of carbon nanotube composites: A review of various modelling techniques

Free vibration analysis of functionally graded graphene-reinforced nanocomposite beams with temperature-dependent properties

An experimental study on the nonlinear free vibration response of epoxy and carbon fiber-reinforced composite containing single-walled carbon nanotubes

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