Results 1 to 10 of about 160,421 (119)

Nonlocal electrodynamics of two-dimensional anisotropic magnetoplasmons [PDF]

open access: yesNanophotonics
We present a hydrodynamic model, grounded in Madelung’s formalism, to describe collective electronic motion in anisotropic materials. This model incorporates nonlocal contributions from the Thomas–Fermi quantum pressure and quantum effects arising from ...
Chaves André J.   +5 more
doaj   +2 more sources

Gradient Nonlocal Enhanced Microprestress-Solidification Theory and Its Finite Element Implementation

open access: yesFrontiers in Materials, 2021
Time-dependent responses of cracked concrete structures are complex, due to the intertwined effects between creep, shrinkage, and cracking. There still lacks an effective numerical model to accurately predict their nonlinear long-term deflections.
Teng Tong   +6 more
doaj   +1 more source

On a Singular Non local Fractional System Describing a Generalized Timoshenko System with Two Frictional Damping Terms

open access: yesFractal and Fractional, 2023
This paper concerns a nonhomogeneous singular fractional order system, with two frictional damping terms. This system can be considered as a generalization of the so-called Timoshenko system.
Said Mesloub, Reem K. Alhefthi
doaj   +1 more source

A Perturbation Approach for Lateral Excited Vibrations of a Beam-like Viscoelastic Microstructure Using the Nonlocal Theory

open access: yesApplied Sciences, 2021
In this paper, we investigate the lateral vibration of fully clamped beam-like microstructures subjected to an external transverse harmonic excitation. Eringen’s nonlocal theory is applied, and the viscoelasticity of materials is considered.
Cheng Li   +3 more
doaj   +1 more source

Nonlocal electro-optic metasurfaces for free-space light modulation

open access: yesNanophotonics, 2023
Dynamic optical metasurfaces with ultrafast temporal response, i.e., spatiotemporal optical metasurfaces, provide attractive solutions and open fascinating perspectives for modern highly integrated optics and photonics.
Damgaard-Carstensen Christopher   +1 more
doaj   +1 more source

Size-dependent Electro-Mechanical Vibration Analysis of FGPM Composite Plates using Modified Shear Deformation Theories [PDF]

open access: yesMechanics of Advanced Composite Structures, 2021
In the current study, the modified shear deformation theories are used for analyzing the electro-mechanical vibration of inhomogeneous piezoelectric nanoplates in conjunction with the nonlocal elasticity theory. These theories not only satisfy transverse
Korosh Khorshidi   +2 more
doaj   +1 more source

Nonlocal Initial Value Problem for Hybrid Generalized Hilfer-type Fractional Implicit Differential Equations

open access: yesNonautonomous Dynamical Systems, 2021
In this paper, we prove some existence results of solutions for a class of nonlocal initial value problem for nonlinear fractional hybrid implicit differential equations under generalized Hilfer fractional derivative. The result is based on a fixed point
Salim Abdelkrim   +4 more
doaj   +1 more source

Wave propagation analysis in transversely isotropic piezoelastic medium based on nonlocal strain gradient theory

open access: yesVietnam Journal of Mechanics, 2023
The purpose of this research is to study the propagation of surface waves in transversely isotropic piezoelastic medium based on nonlocal strain gradient theory. A characteristics equation for the existence of surface waves is discussed.
Trinh Thi Thanh Hue, Do Xuan Tung
doaj   +1 more source

Asymptotic Formulation for the Rayleigh Wave on a Nonlocally Elastic Half-Space

open access: yesVibration, 2023
This paper deals with the Rayleigh wave, propagating on a nonlocally elastic, linearly isotropic half-space, excited by a prescribed surface loading. The consideration develops the methodology of hyperbolic–elliptic models for Rayleigh and Rayleigh-type ...
Danila A. Prikazchikov
doaj   +1 more source

An abstract nonlocal second order evolution problem [PDF]

open access: yesOpuscula Mathematica, 2012
The aim of the paper is to prove theorems on the existence and uniqueness of mild and classical solutions of a semilinear evolution second order equation together with nonlocal conditions.
Ludwik Byszewski, Teresa Winiarska
doaj   +1 more source

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