Low-velocity impact response of sandwich conical shell with agglomerated single-walled carbon nanotubes-reinforced face sheets considering structural damping

In the present article, dynamic response of a thick sandwich truncated conical shells with a transversely flexible/inflexible core and nanocomposite face sheets subjected to low-velocity impact was studied. The face sheets are reinforced with single-walled carbon nanotubes where the agglomeration effects are considered based on Mori–Tanaka model. A new equivalent three-degree-of-freedom spring-mass-damper model is utilized to describe the contact force between impactor and sandwich truncated conical shells. Based on an improved higher order sandwich panel theory, the equations of motion are derived by Hamilton’s principal incorporating the curvature, in-plane stress of the core and the structural damping effects. Differential quadrature method is applied for obtaining the contact force and displacement histories. After validity of the present study, the effects of the single-walled carbon nanotubes volume fraction, single-walled carbon nanotubes agglomeration, number of the layers of the face sheets, boundary conditions, semi-vertex angle of the cone, impact velocity, and mass of impactor on the low-velocity impact response of the nanocomposite structure are studied in details. Numerical results show that increasing the volume fraction of single-walled carbon nanotubes can reduce the amplitude of the dynamic response of the nanocomposite structure.

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The Effect of Volume Fraction of Single-Walled Carbon Nanotubes on Natural Frequencies of Polymer Composite Cone-Shaped Shell Made from Poly(Methyl Methacrylate)

Advances in Materials Science and Engineering ◽

10.1155/2017/7345438 ◽

2017 ◽

Vol 2017 ◽

pp. 1-11 ◽

Cited By ~ 1

Author(s):

A. H. Meysami ◽

H. Razavi ◽

I. Fakhari Golpayegani ◽

V. Bagheri

Keyword(s):

Carbon Nanotubes ◽

Methyl Methacrylate ◽

Polymer Composite ◽

Natural Frequencies ◽

Volume Fraction ◽

Ritz Method ◽

Single Walled Carbon Nanotubes ◽

Poly Methyl Methacrylate ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

In this paper, the effect of volume fraction of single-walled carbon nanotubes on natural frequencies of polymer composite cone-shaped shells made from Poly(Methyl Methacrylate) (PMMA) is studied. In order to determine the characterization of materials reinforced with nanoparticles, the molecular dynamics and mixture rule has been used. The motion equations of composite shell based on the classical thin shells theory using Hamilton’s principle are obtained. Then, using the Ritz method, approximate analytical solution of the natural frequency is presented. Results indicate that the nanotubes have a noticeable effect on the natural frequencies.

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Low velocity impact and compression after impact properties of hybrid bio-composites modified with multi-walled carbon nanotubes

Composites Part B Engineering ◽

10.1016/j.compositesb.2019.01.026 ◽

2019 ◽

Vol 163 ◽

pp. 455-463 ◽

Cited By ~ 23

Author(s):

K.I. Ismail ◽

M.T.H. Sultan ◽

A.U.M. Shah ◽

M. Jawaid ◽

S.N.A. Safri

Keyword(s):

Carbon Nanotubes ◽

Low Velocity Impact ◽

Low Velocity ◽

Impact Properties ◽

Velocity Impact ◽

Compression After Impact ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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On the mechanical properties of functionally graded materials reinforced by carbon nanotubes

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406217706096 ◽

2017 ◽

Vol 232 (9) ◽

pp. 1632-1646 ◽

Cited By ~ 5

Author(s):

Saeed Rouhi ◽

Seyed H Alavi

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Elastic Modulus ◽

Functionally Graded Materials ◽

Volume Fraction ◽

Single Walled Carbon Nanotubes ◽

Functionally Graded ◽

Graded Materials ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

In this paper, the elastic properties of functionally graded materials reinforced by single-walled carbon nanotubes are studied. Three different matrices, including steel-silicon, iron-alumina and alumina-zirconia are considered. Besides, the effects of nanotube length, radius and volume fraction on the Young’s modulus of functionally graded matrices reinforced by single-walled carbon nanotubes are investigated. It is observed that short nanotubes not only cannot increase the longitudinal elastic modulus of the matrices, but sometimes decrease their elastic modulus. Of the three selected matrices, steel-silicon matrix would have the most enhancement. Investigation of the effect of nanotube volume fraction on the mechanical properties of nanocomposites shows that increasing the volume fraction of long single-walled carbon nanotube results in increasing the elastic modulus of the nanocomposites.

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Low-velocity impact response of woven Kevlar/epoxy laminated composites reinforced with multi-walled carbon nanotubes at ambient and low temperatures

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2013.06.051 ◽

2014 ◽

Vol 53 ◽

pp. 152-158 ◽

Cited By ~ 94

Author(s):

Iman Taraghi ◽

Abdolhossein Fereidoon ◽

Fathollah Taheri-Behrooz

Keyword(s):

Carbon Nanotubes ◽

Low Temperatures ◽

Laminated Composites ◽

Impact Response ◽

Low Velocity Impact ◽

Low Velocity ◽

Velocity Impact ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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The effect of physical nonlinearity of the interfacial layer between carbon nanotube and polymer matrix on viscoelastic response of nanocomposite materials under harmonic loading

Journal of Composite Materials ◽

10.1177/0021998318769467 ◽

2018 ◽

Vol 52 (27) ◽

pp. 3731-3744

Author(s):

Mohammad Hashemi ◽

Jafar Amraei

Keyword(s):

Carbon Nanotubes ◽

Interfacial Layer ◽

Volume Fraction ◽

Single Walled Carbon Nanotubes ◽

Viscoelastic Response ◽

Harmonic Loading ◽

Polymeric Nanocomposites ◽

Complex Moduli ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

In present paper, a micro- and macromechanic model is developed to determine the effective nonlinearly viscoelastic response of polymeric nanocomposites reinforced with carbon nanotubes under harmonic loading. By using the correspondence principle in viscoelastic and linearization approach, a three-phase micromechanical model with taking into account the viscoelastic response of the interfacial layer between the reinforcement and the bulk polymer matrix based on the concept of complex moduli is proposed. By employing the present model, the effects of volume fraction of the single-walled carbon nanotubes and also, amplitude of monoharmonic loading on the nonlinear viscoelastic response of polymeric nanocomposites are conducted. For polymeric nanocomposites including unidirectionally aligned carbon nanotubes, numerical results indicate that the effects of both inelastic response of interfacial layer and volume fraction of the single-walled carbon nanotubes on the loss and storage moduli are significantly important. It should be noticed that in mechanical analysis of structural elements made of single-walled carbon nanotubes without consideration of interfacial layer may not give precise predictions. Besides, this paper suggests a new procedure for predicting the complex moduli dependence on frequency and amplitude of strain intensity.

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