Results 11 to 20 of about 12,395 (174)

Inverse-designed gyrotropic scatterers for non-reciprocal analog computing. [PDF]

open access: yesNanophotonics
Abstract While conventional von Neumann based machines are increasingly challenged by modern day requirements, electromagnetic analog computing devices promise to provide a platform that is highly parallel, efficient and fast. Along this paradigm, it has been shown that arrays of subwavelength electromagnetic scatterers can be used as solvers of ...
Hadjiantoni N   +4 more
europepmc   +2 more sources

An Analysis of Nonlinear Beam Vibrations with the Extended ‎Rayleigh-Ritz Method [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2022
The nonlinear deformation and vibrations of beams are frequently encountered as a typical example of structural analysis as well as a mathematical problem.
Huimin Jing   +4 more
doaj   +1 more source

Buckling of elastically restrained nonlocal carbon nanotubes under concentrated and uniformly distributed axial loads [PDF]

open access: yesMechanical Sciences, 2019
Buckling of elastically restrained carbon nanotubes is studied subject to a combination of uniformly distributed and concentrated compressive loads. Governing equations are based on the nonlocal model of carbon nanotubes.
M. T. A. Robinson, S. Adali
doaj   +1 more source

Accurate calculation of the eigenvalues of a new simple class of superpotentials in SUSY quantum mechanics [PDF]

open access: yes, 2013
We obtain accurate eigenvalues for two recently derived SUSY partner Hamiltonians. We improve the Rayleigh-Ritz variational method proposed by the authors and show how to apply the Riccati-Pad\'{e} method to those particular partner ...
Fernández, Francisco M.
core   +4 more sources

Rayleigh-Ritz majorization error bounds with applications to FEM [PDF]

open access: yes, 2009
The Rayleigh-Ritz (RR) method finds the stationary values, called Ritz values, of the Rayleigh quotient on a given trial subspace as approximations to eigenvalues of a Hermitian operator $A$.
Argentati, Merico E., Knyazev, Andrew V.
core   +1 more source

Free Vibration Analysis of Arbitrary-Shaped Plates Based on the Improved Rayleigh–Ritz Method

open access: yesAdvances in Civil Engineering, 2019
In this investigation, an improved Rayleigh–Ritz method is put forward to analyze the free vibration characteristics of arbitrary-shaped plates for the traditional Rayleigh–Ritz method which is difficult to solve.
Wenjie Guo, Qingsong Feng
doaj   +1 more source

Energy methods for curved composite beams with partial shear interaction

open access: yesCurved and Layered Structures, 2015
This paper presents a derivation of the Rayleigh- Betti reciprocity relation for layered curved composite beams with interlayer slip. The principle of minimum of potential energy is also formulated for two-layer curved composite beams and its ...
Ecsedi István, Lengyel Ákos József
doaj   +1 more source

THE APPROXIMATE SOLUTION FOR PLATES USING MODIFIED RAYLEIGH-RITZ METHOD

open access: yesInternational Journal for Computational Civil and Structural Engineering, 2017
For thin elastic plates of arbitrary shape with a smooth pinched or hinged contour based on the modified Rayleigh-Ritz method, explicit expressions are obtained for the approximate values of the maximum deflection from a uniformly distributed load, the ...
Gaik A. Manuylov
doaj   +1 more source

On the plastic buckling of curved carbon nanotubes

open access: yesTheoretical and Applied Mechanics Letters, 2020
This research, for the first time, predicts theoretically static stability response of a curved carbon nanotube (CCNT) under an elastoplastic behavior with several boundary conditions. The CCNT is exposed to axial compressive loads.
Mohammad Malikan
doaj   +1 more source

Sound-vibration behaviors of the thin orthotropic rectangular fluid–structure coupled system resting on varying elastic Winkler and Pasternak foundations

open access: yesResults in Physics, 2018
This paper establishes a thin orthotropic rectangular fluid–structure coupled system which effectively studies the sound-vibration behaviors. The established coupled system is made up of an acoustic enclosure filled with air or water and a single ...
Hong Zhang   +3 more
doaj   +1 more source

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