Nonlinear bending and thermal postbuckling of magneto-electro-elastic nonlocal strain-gradient beam including surface effects

Applied Mathematical Modelling, Год журнала: 2025, Номер 142, С. 115955 - 115955

Опубликована: Янв. 22, 2025

Язык: Английский

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A configuration-driven nonlocal model for functionally graded lattices

International Journal of Engineering Science, Год журнала: 2025, Номер 209, С. 104222 - 104222

Опубликована: Фев. 11, 2025

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A modified spatiotemporal nonlocal thermoelasticity theory with higher-order phase delays for a viscoelastic micropolar medium exposed to short-pulse laser excitation

Continuum Mechanics and Thermodynamics, Год журнала: 2024, Номер 37(1)

Опубликована: Дек. 15, 2024

Abstract At the microscale and nanoscale, materials exhibit size-dependent behaviors that classical models cannot capture. This analysis introduces a higher-order thermoelastic heat conduction model, incorporating spatial temporal nonlocal effects in micropolar visco-thermoelastic medium subjected to laser pulse flux. The two-phase delay featuring derivatives, captures complex interactions among mechanical, thermal, viscous properties where size are significant. By including phase lag, model effectively addresses non-Fourier short-duration scenarios. It accurately predicts temperature distribution, stress response, microrotation nanoscale materials. study visually represents how factors such as micropolarity, effects, delay, index, viscosity influence mechanical behavior of half-space structure. numerical results highlight importance phenomena nanostructures, revealing deviations from predictions due interactions. Overall, proposed spatiotemporal homogenization serves valuable tool for analyzing thermal characteristics nanomaterials.

Язык: Английский

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Size-dependent heat conduction of thermal cellular structures: A surface-enriched multiscale method

Defence Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Space-time non-local analysis of a porous thermoelastic hollow cylinder using a heat conduction model featuring a Goufo-Caputo two-parameter fractional derivative with phase lags

Boundary Value Problems, Год журнала: 2025, Номер 2025(1)

Опубликована: Фев. 26, 2025

Язык: Английский

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Nonlocal fractional MGT-non-Fourier photothermal model with spatial and temporal nonlocality for controlling the behavior of semiconductor materials with spherical cavities

AIMS Mathematics, Год журнала: 2025, Номер 10(3), С. 7559 - 7590

Опубликована: Янв. 1, 2025

Язык: Английский

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Stress-driven nonlocal homogenization method for cellular structures

Aerospace Science and Technology, Год журнала: 2024, Номер unknown, С. 109632 - 109632

Опубликована: Окт. 1, 2024

Язык: Английский

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On the size‐dependent vibrations of doubly curved porous shear deformable FGM microshells

International journal of mechanical system dynamics, Год журнала: 2024, Номер unknown

Опубликована: Дек. 9, 2024

Abstract This paper aims to analyse the free vibrations of doubly curved imperfect shear deformable functionally graded material microshells using a five‐parameter model. Porosity is modeled via modified power‐law rule by logarithmic‐uneven variation along thickness. Coupled axial, transverse, and rotational motion equations for general microsystems are obtained virtual work/energy Hamilton's principle first‐order theory including small size dependence. The modal decomposition method then used obtain solution different geometries microshells: spherical, elliptical, hyperbolic, cylindrical. A detailed study on influence gradation porosity, small‐length scale coefficient, geometrical parameters frequency characteristics microsystem conducted shell geometries.

Язык: Английский

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A well-posed and microstructure-emerged homogenization method for nonlocal metamaterial truss

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 18

Опубликована: Янв. 2, 2025

The classical multiscale homogenization methods can only take into account the pure microstructural effect, resulting in inability to accurately capture nonlocal interactions emerged from underlying microstructures of metamaterial structures. This paper explores interplay mechanism that artificial and develops a well-posed microstructure-emerged method capable capturing nonlocality is strictly related its extrinsic intrinsic length scales. First, we propose novel concentrated element model accounts for both effect interaction describe static response trusses. not considers but also further interaction, thus providing more comprehensive description Then, based on model, developed trusses with an accuracy comparable high-fidelity numerical methods. Since well-posed, closed-form solution displacement truss obtained. High-fidelity finite simulations show effective moduli different have significant effects, especially high porosity. Results indicate provides robust accurate representation truss, significantly outperforming consider effects.

Язык: Английский

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Vibration of a Functionally Graded Doubly Curved Shallow Nanoshell: An Improved FSDT Model and its Nonlocal Finite Element Implement

Journal of Vibration Engineering & Technologies, Год журнала: 2025, Номер 13(1)

Опубликована: Янв. 1, 2025

Язык: Английский

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