Articles with "time harmonic" as a keyword



The time‐harmonic electromagnetic wave scattering by a biperiodic elastic body

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Published in 2024 at "Mathematical Methods in the Applied Sciences"

DOI: 10.1002/mma.9923

Abstract: This paper concentrates on an interaction scattering problem between the time‐harmonic electromagnetic waves and an unbounded periodic elastic medium. The uniqueness results of the interaction problem are established for small frequencies or all frequencies except… read more here.

Keywords: pml; time harmonic; wave scattering; electromagnetic wave ... See more keywords
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Evolution of Time-Harmonic Electromagnetic and Acoustic Waves Along Waveguides

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Published in 2017 at "Integral Equations and Operator Theory"

DOI: 10.1007/s00020-018-2472-4

Abstract: We study time-harmonic electromagnetic and acoustic waveguides, modeled by an infinite cylinder with a non-smooth cross section. We introduce an infinitesimal generator for the wave evolution along the cylinder and prove estimates of the functional… read more here.

Keywords: evolution time; electromagnetic acoustic; harmonic electromagnetic; time ... See more keywords

Experimental verification of quasi-nonlinear modeling of magnetic steel for time-harmonic eddy current loss calculation

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Published in 2017 at "Electrical Engineering"

DOI: 10.1007/s00202-016-0372-7

Abstract: Eddy current losses are evaluated on FEM (finite element method) models of magnetic steel rings. DC magnetization curve has been obtained from measurements on steel samples and is used in FEM models for defining relative… read more here.

Keywords: time harmonic; calculation; eddy current; magnetic steel ... See more keywords
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A model of the time-harmonic torsional response of piled plates using an IBEM-FEM coupling

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Published in 2021 at "Engineering Analysis With Boundary Elements"

DOI: 10.1016/j.enganabound.2021.01.010

Abstract: Abstract This article presents a model of the response of rigid circular plates supported by embedded elastic pile foundations under time-harmonic torsional excitation. The contact tractions at the pile-soil and plate-soil interfaces are resolved into… read more here.

Keywords: harmonic torsional; soil; torsional response; time harmonic ... See more keywords
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Fundamental solution of general time-harmonic loading over a transversely isotropic, elastic and layered half-space: An efficient and accurate approach

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Published in 2021 at "Engineering Analysis With Boundary Elements"

DOI: 10.1016/j.enganabound.2021.08.006

Abstract: Abstract Time-harmonic loading over layered elastic half-spaces has applications in various science and engineering fields. While various approaches have been proposed in solving the related boundary-value problems, in this paper, we propose a new approach,… read more here.

Keywords: time; harmonic loading; approach; system vector ... See more keywords

On the unsteady and time-harmonic conservation laws of electromagnetic energy and chirality

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Published in 2017 at "Optik"

DOI: 10.1016/j.ijleo.2017.09.005

Abstract: Abstract We examine conservation laws of the energy and chirality for electromagnetic waves in the case of loss-free dielectric media. We show that the energy allows for conservation laws for both generic unsteady and time-harmonic… read more here.

Keywords: chirality; energy; conservation; conservation laws ... See more keywords

Optical Chirality of Time-Harmonic Wavefields for Classification of Scatterers

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Published in 2018 at "Scientific Reports"

DOI: 10.1038/s41598-018-27496-w

Abstract: We derive expressions for the scattering, extinction and conversion of the chirality of monochromatic light scattered by bodies which are characterized by a T-matrix. In analogy to the conditions obtained from the conservation of energy,… read more here.

Keywords: classification; chirality; harmonic wavefields; chirality time ... See more keywords

Simulation and Analysis of Time‐Harmonic Electromagnetic Field Through Metal Casing

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Published in 2025 at "Electronics Letters"

DOI: 10.1049/ell2.70201

Abstract: In this paper, we present a stable analytical method to simulate the electromagnetic (EM) field through the casing. The expression of the EM field consists of the modified Bessel and Hankel functions that avoid the… read more here.

Keywords: field; analysis time; time harmonic; electromagnetic field ... See more keywords

Effect of time‐harmonic current on the harmonic leakage inductance of fractional slot concentrated winding permanent magnet synchronous motor

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Published in 2020 at "Iet Electric Power Applications"

DOI: 10.1049/iet-epa.2020.0077

Abstract: Harmonic leakage inductance occupies a high proportion in the synchronous inductance of fractional slot concentrated winding permanent magnet synchronous motor (FSCW-PMSM), and the synchronous inductance determines the operating performance of the motor. To calculate the… read more here.

Keywords: time harmonic; leakage inductance; inductance; harmonic leakage ... See more keywords

Electromagnetic forces on a discrete concentrator under time-harmonic illumination

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Published in 2023 at "Applied Physics Letters"

DOI: 10.1063/5.0139028

Abstract: We study electromagnetic forces and torques experienced on both perfect and discretized transformation-based concentrators, under time-harmonic illumination. The effect of the concentration is investigated in both cases and compared to the case of a perfect… read more here.

Keywords: electromagnetic forces; concentrator; harmonic illumination; time harmonic ... See more keywords

Lipschitz stability at the boundary for time-harmonic diffuse optical tomography

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Published in 2020 at "Applicable Analysis"

DOI: 10.1080/00036811.2020.1758314

Abstract: We study the inverse problem in Optical Tomography of determining the optical properties of a medium $\Omega\subset\mathbb{R}^n$, with $n\geq 3$, under the so-called diffusion approximation. We consider the time-harmonic case where $\Omega$ is probed with… read more here.

Keywords: lipschitz stability; optical tomography; time harmonic;