Three-dimensional nonlinear stability analysis of axial-thermal-electrical loaded FG piezoelectric microshells via MKM strain gradient formulations

Applied Mathematics and Computation, Год журнала: 2022, Номер 439, С. 127623 - 127623

Опубликована: Окт. 17, 2022

Язык: Английский

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Surface stress size dependency in nonlinear thermomechanical in-plane stability characteristics of FG laminated curved nanobeams

Engineering Structures, Год журнала: 2023, Номер 284, С. 115957 - 115957

Опубликована: Март 14, 2023

Язык: Английский

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Nonlinear dynamical performance of microsize piezoelectric bridge-type energy harvesters based upon strain gradient-based meshless collocation approach

Engineering Analysis with Boundary Elements, Год журнала: 2023, Номер 151, С. 199 - 215

Опубликована: Март 13, 2023

Язык: Английский

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Surface stress effect on nonlinear dynamical performance of nanobeam-type piezoelectric energy harvesters via meshless collocation technique

Engineering Analysis with Boundary Elements, Год журнала: 2023, Номер 152, С. 104 - 119

Опубликована: Апрель 10, 2023

Язык: Английский

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A comprehensive review on the vibration analyses of small-scaled plate-based structures by utilizing the nonclassical continuum elasticity theories

Thin-Walled Structures, Год журнала: 2022, Номер 179, С. 109622 - 109622

Опубликована: Июнь 30, 2022

Язык: Английский

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Nonlinear Dynamical Instability Characteristics of FG Piezoelectric Microshells Incorporating Nonlocality and Strain Gradient Size Dependencies

International Journal of Structural Stability and Dynamics, Год журнала: 2022, Номер 23(07)

Опубликована: Ноя. 16, 2022

In the present exploration, nonlocal stress and strain gradient microscale effects are adopted on nonlinear dynamical instability feature of functionally graded (FG) piezoelectric microshells under a combination axial compression, electric actuation, temperature. To perform this objective, unified unconventional shell model based continuum elasticity is established to capture size as well influence geometrical nonlinearity together with shear deformation along transverse direction dynamic stability curves. With aid an efficient numerical strategy incorporating generalized differential quadrature pseudo arc-length continuation technique, extracted equations in conjunction associated edge supports discretized solved trace paths FG microshells. It revealed that result in, respectively, higher lower values frequency ratio comparison conventional one due stiffening softening characters nonlocality dependency, respectively. addition, it observed within prebuckling territory, character somehow more than microsize while by switching postbuckling domain, pattern becomes vice versa.

Язык: Английский

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Nonlocal couple stress-based quasi-3D nonlinear dynamics of agglomerated CNT-reinforced micro/nano-plates before and after bifurcation phenomenon

Physica Scripta, Год журнала: 2023, Номер 98(3), С. 035710 - 035710

Опубликована: Фев. 2, 2023

Abstract In present research exploration, the nonlinear dynamic stability characteristics of axially compressed nanocomposite plates at micro/nano-scale reinforced with randomly oriented carbon nanotubes (CNTs) are investigated within both prebuckling and postbuckling regimes. To accomplish this examination, nonlocal couple stress (NCS) continuum elasticity is incorporated to a quasi-3D plate theory which separates deformation bending shear parts considering simultaneously transverse normal displacements. addition, two-parameter homogenization scheme utilized obtain effective characters CNT-reinforced nanocomposites. The NCS-based differential equations motion discretized using Kronecker tensor product together shifted Chebyshev-Gauss-Lobatto gridding pattern. Thereafter, Galerkin technique pseudo arc-length continuation method employed achieve fRequency-load frequency ratio-deflection curves before after bifurcation point. It deduced that for heterogeneous micro/nano-plate in most CNTs located inside clusters, increasing value cluster volume fraction leads increase bit significance softening stiffing related tensors phenomenon, but it causes decrease them critical Opposite patterns phenomenon predicted agglomeration outside clusters.

Язык: Английский

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Porosity and size effects on electro-hygrothermal bending of FG sandwich piezoelectric cylindrical shells with porous core via a four-variable shell theory

Case Studies in Thermal Engineering, Год журнала: 2023, Номер 45, С. 102934 - 102934

Опубликована: Март 21, 2023

The sinusoidal four-variable shear deformation shell theory is employed, for the first time, to investigate size dependent electro-hygrothermal bending of functionally graded (FG) sandwich piezoelectric cylindrical shells integrated with porous core. This model assumed be rested on two-parameter elastic foundations and subjected elevated temperature, moisture concentration external electric voltage as well transverse mechanical loads. In order take into account effect, modified couple stress employed containing only one length scale parameter. core layer material. Whereas, face sheets are made a material which having gradient change along thickness direction. Based theory, four governing equations obtained involving forces foundation interaction, in addition an equation associated electrical potential. An analytical solution presented get displacements stresses FG shells. Influences geometric parameters, parameter, temperature rise, concentration, voltage, porosity factor, coefficients resting discussed.

Язык: Английский

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State-of-the-Art Review of Computational Static and Dynamic Behaviors of Small-Scaled Functionally Graded Multilayer Shallow Arch Structures from Design to Analysis

Archives of Computational Methods in Engineering, Год журнала: 2023, Номер 31(1), С. 389 - 453

Опубликована: Авг. 14, 2023

Язык: Английский

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Effect of porosity and characteristics of carbon nanotube on the nonlinear characteristics of a simply-supported sandwich plate

Archives of Civil and Mechanical Engineering, Год журнала: 2023, Номер 23(3)

Опубликована: Июль 29, 2023

Язык: Английский

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