The effect of CNT volume fraction on the magneto-thermo-electro-mechanical behavior of smart nanocomposite cylinder

Arani, A. Ghorbanpour; Mobarakeh, M. Rahnama; Shams, Sh.; Mohammadimehr, Mehdi

doi:10.1007/s12206-012-0639-5

Cited by 22 publications

(6 citation statements)

References 16 publications

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“…Thus, in this study, PVDF is chosen for the spherical structure. In the numerical calculations, the mechanical, electrical and thermal properties written in Tables 1 and 2 are taken from [3].…”

Section: Materials Propertiesmentioning

confidence: 99%

“…Ghorbanpour Arani et al [3] using an analytical approach investigated the thermo-elastic response of a long piezoelectric polymeric hollow cylinder reinforced with carbon nanotube (CNT) under combined magneto-thermo-electromechanical loading. Wang and Zhu [4] considered electrical and mechanical loading on a FGPM sphere and solved the constitutive differential equations using Frobenius series.…”

Section: Introductionmentioning

confidence: 99%

“…Gpa 0.3 1800 kg/m 3 1.45 9 10 -4 1/K 0.13 9 10 -4 1/K 0.18 W/mKTable 2Electrical properties of PVDF[3] …”

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confidence: 99%

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Non-stationary electro-thermo-mechanical creep response and smart deformation control of thick-walled sphere made of polyvinylidene fluoride

Loghman

Tourang

2015

J Braz. Soc. Mech. Sci. Eng.

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This paper describes an analytical-numerical model developed for non-stationary electro-thermo-mechanical creep response of a smart sphere made of polyvinylidene fluoride (PVDF) using Burgers' creep model. The piezoelectric properties of the PVDF are used to control creep deformation of the sphere. Time-dependent stresses, displacements, electric potential and strains are calculated using Mendelson's method of successive approximation. The vessel is subjected to internal and external pressures, distributed temperature fields and an applied electric potential. Two loading combinations have been considered in this study. All mechanical, thermal and piezoelectric properties are selected from the experimental data existed in the literature. All creep parameters for Burgers' model are functions of time, temperature and stress. Their functional relationship is obtained using a nonlinear regression. Therefore, this study is a nonlinear time-dependent analysis. Total strains are assumed to be the sum of elastic, thermal, electrical and creep strains. Creep strains are time, temperature and stress dependent. Using the equations of equilibrium, compatibility, Maxwell's equation for free electric charge and stress-strain relations, a differential equation, containing creep strains, for spherical vessel is obtained. A new semi-analytical solution has been developed to find displacement, stresses, strains and electric potential in terms of time-dependent creep strains. Creep strain rates are related to the Burgers' creep model and current stresses with the Prandtl-Reuss relations. Using Mendelson's method of successive approximation, the histories of electric potential, radial, circumferential and effective stresses and strains are calculated. It has been found that by applying a suitable electric potential deformation of the sphere can be controlled.

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Section: Materials Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Non-stationary electro-thermo-mechanical creep response and smart deformation control of thick-walled sphere made of polyvinylidene fluoride

Loghman

Tourang

2015

J Braz. Soc. Mech. Sci. Eng.

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“…Carbon nanotubes have been accepted as an excellent candidate for the reinforcement of polymer composites due to their high stiffness, tensile strength, and low density [1][2][3][4][5]. Meanwhile, a large number of investigations have been devoted to study the mechanical, thermal, and electrical behavior of carbon nanotube-reinforced composite beams and plates [6][7][8]. It is believed that the buckling is one of the important failure modes of the structural elements.…”

Section: Introductionmentioning

confidence: 99%

Critical buckling load optimization of functionally graded carbon nanotube‐reinforced laminated composite quadrilateral plates

Setoodeh

Shojaee

2017

Polymer Composites

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The effective method of transformed differential quadrature (TDQ) is improved for the buckling design optimization of functionally graded (FG) carbon nanotube‐reinforced laminated composite quadrilateral (FG‐CNTRCQ) plates with arbitrary straight‐sided based on the first‐order shear deformation theory. The laminated plates with both uniformly and FG distributions of single‐walled carbon nanotubes varied along the thickness of layers are considered. The TDQ method is used to directly discretize the governing differential equations for an arbitrary straight‐sided physical domain without any need to transform the equations to the computational domain. In the presented genetic algorithm, the orientation of fibers is considered as the design parameter to obtain the optimum critical buckling loads in terms of different parameters including distributions of the fibers, number of layers, stacking sequence, CNTs volume fraction, geometrical parameters, and boundary conditions. The edges of the plates can take arbitrary end supports of simply and clamped boundary conditions. The formulation is developed based on the invariant terms to provide a systematic procedure with minimum computational cost. Some parametric studies are conducted to examine the effectiveness of the model for the design purpose of the FG‐CNTRCQ plates. POLYM. COMPOS., 39:E853–E868, 2018. © 2017 Society of Plastics Engineers

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“…Based on using the third order shear theory (TSDT), they employed Hamilton's principle to obtain equations of motion and numerical solutions to find the natural frequencies. Ghorbanpour Arani et al (2012) investigated the effect of the CNT volume fraction on the magneto-thermoelectro-mechanical behavior of a smart nanocomposite cylinder. Their results indicated that the influence of internal pressure on the radial stress was larger than thermal, magnetic and electric fields.…”

Section: Introductionmentioning

confidence: 99%

Bending, buckling, and forced vibration analyses of nonlocal nanocomposite microplate using TSDT considering MEE properties dependent to various volume fractions of CoFe2O4-BaTiO3

Mohammadimehr

Rostami

2017

jtam

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In this article, the bending, buckling, free and forced vibration behavior of a nonlocal nanocomposite microplate using the third order shear deformation theory (TSDT) is presented. The magneto-electro-elastic (MEE) properties are dependent on various volume fractions of CoFe 2 O 4 -BaTiO 3 . According to Maxwell's equations and Hamilton's principle, the governing differential equations are derived. These equations are discretized by using Navier's method for an MEE nanocomposite Reddy plate. The numerical results show the influences of elastic foundation parameters such as aspect ratio, length to thickness ratio, electric and magnetic fields and various volume fractions of CoFe 2 O 4 -BaTiO 3 on deflection, critical buckling load and natural frequency. The natural frequency and critical buckling load increases with the increasing volume fraction of CoFe 2 O 4 -BaTiO 3 , also the amplitude vibration decreases with an increase in the volume fraction. This model can be used for various nanocomposite structures. Also, a series of new experiments are recommended for future work.Keywords: bending and buckling analysis, free and forced vibration analysis, nonlocal nanocomposite microplate, various volume fractions of CoFe 2 O 4 -BaTiO 3

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The effect of CNT volume fraction on the magneto-thermo-electro-mechanical behavior of smart nanocomposite cylinder

Cited by 22 publications

References 16 publications

Non-stationary electro-thermo-mechanical creep response and smart deformation control of thick-walled sphere made of polyvinylidene fluoride

Non-stationary electro-thermo-mechanical creep response and smart deformation control of thick-walled sphere made of polyvinylidene fluoride

Critical buckling load optimization of functionally graded carbon nanotube‐reinforced laminated composite quadrilateral plates

Bending, buckling, and forced vibration analyses of nonlocal nanocomposite microplate using TSDT considering MEE properties dependent to various volume fractions of CoFe2O4-BaTiO3

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