Results 11 to 20 of about 4,691,284 (303)
Statistical energy analysis of engineering structures [PDF]
, 1988 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis examines the fundamental equations of the branch of linear oscillatory dynamics known as Statistical Energy Analysis (SEA).
Keane, Andrew John
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Explicit error bounds for the α-quasi-periodic Helmholtz problem [PDF]
, 2013 This paper considers a finite element approach to modeling electromagnetic waves in a periodic diffraction grating. In particular, an a priori error estimate associated with the α-quasi-periodic transformation is derived.
Mulholland, Anthony +2 more
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Accelerated dispersion curve calculations for periodic vibro-acoustic structures
Frontiers in Mechanical Engineering, 2022 Over the years, metamaterials have shown their potential in a wide range of different disciplines, e.g. optics, electromagnetics, dynamics etc. Metamaterials are, often periodic, engineered structures made of conventional materials but which exhibit ...
Vanessa Cool +9 more
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DOUBLY PERIODIC TEXTILE STRUCTURES [PDF]
Journal of Knot Theory and Its Ramifications, 2009 Knitted and woven textile structures are examples of doubly periodic structures in a thickened plane made out of intertwining strands of yarn. Factoring out the group of translation symmetries of such a structure gives rise to a link diagram in a thickened torus, as in [2]. Such a diagram on a standard torus in S
Morton, H. R., Grishanov, S. A.
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Wave Propagation in Periodic Metallic Structures with Equilateral Triangular Holes
Applied Sciences, 2020 This paper studies wave propagation in a periodic parallel-plate waveguide with equilateral triangular holes. A mode-matching method is implemented to analyze the dispersion diagram of the structure possessing glide and mirror symmetries. Both structures
Antonio Alex-Amor +6 more
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IEEE Access, 2020 In this paper, we explore the excitation of magnetic current surface waves in truncated periodic arrays of slots in a conducting screen. A specialized Method of Moments (MoM) implementation is presented, which makes it possible to efficiently solve the ...
Miguel Camacho +3 more
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Self–imaging effect in multimode waveguides with longitudinal periodicity [PDF]
Journal of the European Optical Society-Rapid Publications, 2009 This paper deals with the self-imaging effect in multimode waveguides. Analogies and differences to the free-space case are shown. The fields in multimode waveguides are studied.
Helfert Stefan F. +2 more
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Locally periodic unfolding method and two-scale convergence on surfaces of locally periodic microstructures [PDF]
, 2015 In this paper we generalize the periodic unfolding method and the notion of two-scale convergence on surfaces of periodic microstructures to locally-periodic situations.
Ptashnyk, Mariya +2 more
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Low-Profile High-Gain and Wide-Angle Beam Scanning Phased Transmitarray Antennas
IEEE Access, 2020 Combining the inherent multiple beam capabilities of transmitarray antennas (TAAs) and the flexible fields launched by phased array antennas (PAAs), PAA-fed TAAs are proposed in this paper for high-gain and wide-angle beam scanning in millimeter-wave ...
Peng-Yu Feng +3 more
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2-D periodic structures. A numerical study [PDF]
PSU Research Review, 2018 Purpose - Within the context of 2D square lattices, searching for the existence of band gaps assumes a great interest owing to many possible fields of application: from energy absorption devices to noise and vibration controllers, as well as advanced ...
Giuseppe Rocchetta, Geminiano Mancusi
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