Vibration of functionally graded carbon nanotubes reinforced composite truncated conical panels with elastically restrained against rotation edges in thermal environment

Jooybar, Najmeh; Malekzadeh, P.; Fiouz, Alireza

doi:10.1016/j.compositesb.2016.09.030

Cited by 74 publications

(20 citation statements)

References 39 publications

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“…The matrix of the nano‐composite properties vary by temperature changes according to Table . Also, the CNTs reinforcements temperature‐dependent and independent properties are listed in Table . In Figure b the mechanical properties of the face sheets respect to temperature variations are shown.…”

Section: Materials Properties Of Sandwich Beammentioning

confidence: 99%

“…[53] Also, the CNTs reinforcements temperature-dependent and inde-T A B L E 3 Temperature-dependent properties of PMMA [53] Material Properties Table 4. [54] In Figure 3b the mechanical properties of the face sheets respect to temperature variations are shown. The various distributions of the CNTs for the top (ℎ ∕2 ≤ ≤ ℎ ∕2 + ℎ ) and the bottom (−ℎ ∕2 − ℎ ≤ ≤ −ℎ ∕2) face sheets can be expressed as [55] :…”

Section: Fg-cntrc Face Sheetsmentioning

confidence: 99%

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Size‐dependent free vibration of sandwich micro beam with porous core subjected to thermal load based on SSDBT

2019

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In this study, free vibration of the sandwich microbeam with porous core and FG carbon nanotubes reinforced composite face sheets which is rested on Winkler‐Pasternak substrate is investigated. It is assumed the beam is in thermal environment and is subjected to thermal load and the displacement components are described based on sinusoidal shear deformation beam theory. The small scale effects are taken into account according to the modified couple stress theory. The core and face sheets properties are diffused through the thickness. The motion equations are derived and solved using Hamilton's principle and Navier's method, respectively. Effect of different parameters such as porosity coefficient and distributions, different types of CNTs distribution, small scale and geometrical size of the beam is considered. The results show by enhancing the porosity, the frequency decreased. The findings of the current study can be used to design prominent role in modern engineering applications.

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Section: Materials Properties Of Sandwich Beammentioning

confidence: 99%

Section: Fg-cntrc Face Sheetsmentioning

confidence: 99%

Size‐dependent free vibration of sandwich micro beam with porous core subjected to thermal load based on SSDBT

2019

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“…Free vibration analysis is a common practice for investigating the natural frequency of structures in many industrial applications. In this regard, Jooybar et al , Ghorbani Shenas et al , and Malekzadeh et al studied free vibration of functionally graded carbon nanotube reinforced composite (FG‐CNTRC) plates/beams/conical panels, under a moving load, and in thermal environment. Furthermore, for FG‐CNTRC skew plates, low velocity impact was studied using the finite element method (FEM) in combination with Newmark's time integration method by Malekzadeh and Dehbozorgi .…”

Section: Introductionmentioning

confidence: 99%

Free vibration of size and temperature‐dependent carbon nanotube (CNT)‐reinforced composite nanoplates with CNT agglomeration

Daghigh

2018

Polymer Composites

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Free vibration analysis of size‐dependent carbon nanotube‐reinforced composite (CNTRC) nanoplates, resting on the visco‐Pasternak foundation is studied. The Mori–Tanaka approach, considering carbon nanotube (CNT) agglomeration, is employed to derive the material properties of the composite nanoplates. The analysis is carried out for the uniform distribution (UD) and randomly oriented (RO) distribution of single‐walled carbon nanotubes (SWCNTs) while the nanoplate and the foundation are considered to be temperature‐dependent. Using Hamilton's principle, the governing differential equations are derived based on the Eringen's nonlocal elasticity theory and sinusoidal shear deformation theory (SSDT). The natural frequency of the nanoplates is then obtained by the Navier's analytical solution. To verify the method presented, the results are compared with those in the literature. Detailed parametric studies are performed to discuss the influences of CNTs agglomeration, nonlocal parameter, temperature, foundation parameters, the volume fraction of CNTs, plate length‐to‐thickness, and aspect ratios on the free vibration of the CNTRC nanoplates. POLYM. COMPOS., 40:E1479–E1494, 2019. © 2018 Society of Plastics Engineers

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“…Indeed, this gradual variation of the mechanical properties is applied to overcome some of the limitations of laminated composites, such as delamination and interlaminar cracks. Starting from the same ideas of FGMs, the class of functionally-graded Carbon Nanotube-reinforced composites is becoming very popular due to the introduction of nanoparticles as the reinforcing phase in the composite medium [ 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 ]. Even in this circumstance, the variation of the mechanical properties is obtained by defining the volume fraction distribution of the constituents by means of different through-the-thickness laws.…”

Section: Introductionmentioning

confidence: 99%

Linear Static Behavior of Damaged Laminated Composite Plates and Shells

2017

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A mathematical scheme is proposed here to model a damaged mechanical configuration for laminated and sandwich structures. In particular, two kinds of functions defined in the reference domain of plates and shells are introduced to weaken their mechanical properties in terms of engineering constants: a two-dimensional Gaussian function and an ellipse shaped function. By varying the geometric parameters of these distributions, several damaged configurations are analyzed and investigated through a set of parametric studies. The effect of a progressive damage is studied in terms of displacement profiles and through-the-thickness variations of stress, strain, and displacement components. To this end, a posteriori recovery procedure based on the three-dimensional equilibrium equations for shell structures in orthogonal curvilinear coordinates is introduced. The theoretical framework for the two-dimensional shell model is based on a unified formulation able to study and compare several Higher-order Shear Deformation Theories (HSDTs), including Murakami’s function for the so-called zig-zag effect. Thus, various higher-order models are used and compared also to investigate the differences which can arise from the choice of the order of the kinematic expansion. Their ability to deal with several damaged configurations is analyzed as well. The paper can be placed also in the field of numerical analysis, since the solution to the static problem at issue is achieved by means of the Generalized Differential Quadrature (GDQ) method, whose accuracy and stability are proven by a set of convergence analyses and by the comparison with the results obtained through a commercial finite element software.

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Vibration of functionally graded carbon nanotubes reinforced composite truncated conical panels with elastically restrained against rotation edges in thermal environment

Cited by 74 publications

References 39 publications

Size‐dependent free vibration of sandwich micro beam with porous core subjected to thermal load based on SSDBT

Size‐dependent free vibration of sandwich micro beam with porous core subjected to thermal load based on SSDBT

Free vibration of size and temperature‐dependent carbon nanotube (CNT)‐reinforced composite nanoplates with CNT agglomeration

Linear Static Behavior of Damaged Laminated Composite Plates and Shells

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