Smart control and vibration of viscoelastic actuator-multiphase nanocomposite conical shells-sensor considering hygrothermal load based on layerwise theory

Hajmohammad, Mohammad Hadi; Farrokhian, A.; Kolahchi, Reza

doi:10.1016/j.ast.2018.04.030

Cited by 55 publications

(20 citation statements)

References 27 publications

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“…in which k 1 is Winkler foundation modulus, k 2 is stiffness of shear layer of Pasternak foundation model, and D ¼ @ 2 =@x 2 þ @ 2 =@y 2 is Laplace operator. By virtue of constitutive equations (15,16) and relations (11), and taking into account effects of initial geometrical imperfection, above equilibrium equations can be rewritten in a more compact form as…”

Section: Formulationsmentioning

confidence: 99%

Thermal postbuckling of shear deformable CNT-reinforced composite plates with tangentially restrained edges and temperature-dependent properties

Tung

Trang

2018

Journal of Thermoplastic Composite Materials

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Buckling and postbuckling behaviors of moderately thick composite plates reinforced by single-walled carbon nanotubes (SWCNTs), rested on elastic foundations and subjected to two types of thermal loading are investigated in this article. Carbon nanotubes (CNTs) are reinforced into isotropic polymer matrix according to functional rules in which volume fractions of constituents are graded in the thickness direction. Material properties of constituents are assumed to be temperature-dependent and effective properties of nanocomposite are estimated by extended rule of mixture. Formulations are based on first-order shear deformation theory taking von Karman nonlinearity, initial geometrical imperfection, tangential constraints of edges, and two-parameter elastic foundation into consideration. Approximate solutions are assumed to satisfy simply supported boundary conditions and Galerkin method is applied to derive nonlinear temperature–deflection relations from which buckling temperatures and postbuckling equilibrium paths are determined by an iteration algorithm. Novel findings of the present study are that deteriorative influences of temperature-dependent properties on the postbuckling behavior become more serious as plate edges are partially movable, CNT volume fraction is higher, elastic foundations are stiffer, plates are thicker, and/or temperature linearly changed across the thickness.

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Section: Formulationsmentioning

confidence: 99%

Thermal postbuckling of shear deformable CNT-reinforced composite plates with tangentially restrained edges and temperature-dependent properties

Tung

Trang

2018

Journal of Thermoplastic Composite Materials

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“…= 5.43874 − 9.95498 × 10 −4 T + 3.13525 × 10 −7 T 2 − 3.56332 × 10 −12 T 3 × 10 −6 /K. (30) The coefficients η 1 and η 2 are estimated by using the elastic constants E 11 and E 22 of CNTRC shells and can be applied with the rule of mixture to those from molecular dynamics simulations, as reported by Han and Elliott [50]. According to results of Shen and Xiang [24], η 1 = 0.137, η 2 = 1.022 applies for the case of V * CNT = 0.12; η 1 = 0.142, η 2 = 1.626 applies for the case of V * CNT = 0.17; and η 1 = 0.141, η 2 = 1.585 applies for the case of V * CNT = 0.28 and η 3 : η 2 = 0.7 : 1.…”

mentioning

confidence: 92%

“…Hajmohammad et al [29] investigated the thermal and moisture effect on the dynamic responses of a submerged viscoelastic agglomerated carbon nanotube (CNT) cylindrical shell subjected to earthquake loads. Smart control and vibration behavior of viscoelastic laminated sandwich conical shells subjected to hygrothermal loads by using the layerwise theory was proposed by Hajmohammad et al [30]. The shells are made of outer piezoelectric layers with carbon fibers or carbon nanotubes (CNTs) core layers.…”

Section: Introductionmentioning

confidence: 99%

A New Analytical Approach for Nonlinear Global Buckling of Spiral Corrugated FG-CNTRC Cylindrical Shells Subjected to Radial Loads

Nam

Dang

et al. 2020

Applied Sciences

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The present paper deals with a new analytical approach of nonlinear global buckling of spiral corrugated functionally graded carbon nanotube reinforced composite (FG-CNTRC) cylindrical shells subjected to radial loads. The equilibrium equation system is formulated by using the Donnell shell theory with the von Karman’s nonlinearity and an improved homogenization model for spiral corrugated structure. The obtained governing equations can be used to research the nonlinear postbuckling of mentioned above structures. By using the Galerkin method and a three term solution of deflection, an approximated analytical solution for the nonlinear stability problem of cylindrical shells is performed. The linear critical buckling loads and postbuckling strength of shells under radial loads are numerically investigated. Effectiveness of spiral corrugation in enhancing the global stability of spiral corrugated FG-CNTRC cylindrical shells is investigated.

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“…Sun et al [11] have investigated vibration control of conical shells via piezoelectric ceramics using a multimodal fuzzy sliding mode controller. Hajmohammad et al [12] have Technical Editor: Wallace Moreira Bessa, D.Sc.. studied vibration and smart control of laminated sandwich conical shells containing piezoelectric layers based on layerwise first-order shear deformation theory by means of differential quadrature method. Chan et al [13] have presented the nonlinear dynamic and vibration responses of functionally graded conical panel with piezoelectric actuators resting on elastic foundations in thermal environment based on Galerkin and Runge-Kutta methods.…”

Section: Introductionmentioning

confidence: 99%

“…the partial differential equations for the vibration of the rotating laminated composite truncated conical shell are extracted in the following forms: Substituting Eqs. (2), (3), (8), (9),(12) and(13) into Eqs. (24)-(28) leads to the following matrix relationship:…”

mentioning

confidence: 99%

Active vibration control of rotating laminated composite truncated conical shells through magnetostrictive layers based on first-order shear deformation theory

Mohammadrezazadeh

Jafari

2020

J Braz. Soc. Mech. Sci. Eng.

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In this paper, for the first time active vibration control of rotating laminated composite truncated conical shells containing magnetostrictive layers by employing first-order shear deformation theory is investigated. The active vibration control task is done through magnetostrictive layers employing velocity feedback control law. The effects of initial hoop tension and centrifugal and Coriolis forces are considered in extraction of the partial differential equations through Hamilton principle. The ordinary differential equations are derived by employing modified Galerkin method. This study agrees with the mentioned results of the literature. Finally, the effects of several parameters on the vibration suppression are investigated.

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Smart control and vibration of viscoelastic actuator-multiphase nanocomposite conical shells-sensor considering hygrothermal load based on layerwise theory

Cited by 55 publications

References 27 publications

Thermal postbuckling of shear deformable CNT-reinforced composite plates with tangentially restrained edges and temperature-dependent properties

Thermal postbuckling of shear deformable CNT-reinforced composite plates with tangentially restrained edges and temperature-dependent properties

A New Analytical Approach for Nonlinear Global Buckling of Spiral Corrugated FG-CNTRC Cylindrical Shells Subjected to Radial Loads

Active vibration control of rotating laminated composite truncated conical shells through magnetostrictive layers based on first-order shear deformation theory

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