Results 21 to 30 of about 6,337 (213)

Free in-plane vibration of heterogeneous nanoplates using Ritz method [PDF]

open access: yesJournal of Theoretical and Applied Vibration and Acoustics, 2016
In this paper, the Ritz method has been employed to analyze the free in-plane vibration of heterogeneous (non-uniform) rectangular nanoplates corresponding to Eringen’s nonlocal elasticity theory.
Shirko Faroughi   +1 more
doaj   +1 more source

Improvement of Calculation Technique for Flexible Orthotropic Plates on Elastic Base. Part 2. Calculation Results

open access: yesНаука и техника, 2022
The proposed paper is a continuation of the author's theoretical work presented earlier in the development of the theory and methodology for calculating flexible orthotropic reinforced concrete plates on an elastic foundation, taking into account the ...
O. V. Kozunova
doaj   +1 more source

Generalized stress field in granular soils heap with Rayleigh–Ritz method

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2017
The stress field in granular soils heap (including piled coal) will have a non-negligible impact on the settlement of the underlying soils. It is usually obtained by measurements and numerical simulations.
Gang Bi
doaj   +1 more source

Acoustic Response of an Isotropic Beam Under Axially Variable Loads Using Ritz and Rayleigh Integral Methods [PDF]

open access: yesArchives of Acoustics, 2022
Vibro-acoustic response of an isotropic beam under the action of variable axial loads (VALs), is presented in the study. Effects of six different types of VALs and three types of end conditions on buckling, free vibration and sound radiation ...
Somi Naidu Balireddy   +3 more
doaj   +1 more source

Vibration analysis of nanorods by the Rayleigh-Ritz method and truncated Fourier series

open access: yesResults in Physics, 2019
A solution procedure applicable for analyzing the free longitudinal vibration of nanorods is presented in this study. The longitudinal displacement of the nanorod is sought as a linear combination of a Fourier series and auxiliary trigonometric functions.
Siyuan Bao, Jinrui Cao, Shuodao Wang
doaj   +1 more source

Hemispherical Resonator of a Rate-integrating Gyroscope: A ‎Novel Method for Determination of Eigenfrequencies and ‎Eigenforms in Presence of Imperfections‎ [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2023
This paper investigates the problem of free vibrations of a hemispherical shell resonator of a rate-integrating gyroscope. A new realization of the approximate Ritz method for determining the frequencies and forms of free vibrations of an elastic ...
Dmitry Indeitsev   +3 more
doaj   +1 more source

Comparison of an improved self-consistent lower bound theory with Lehmann’s method for low-lying eigenvalues

open access: yesScientific Reports, 2021
Ritz eigenvalues only provide upper bounds for the energy levels, while obtaining lower bounds requires at least the calculation of the variances associated with these eigenvalues. The well-known Weinstein and Temple lower bounds based on the eigenvalues
Miklos Ronto   +2 more
doaj   +1 more source

Large Amplitude Free Vibration Analysis of Thin Rectangular Plates: Simple Closed-form Solutions

open access: yesNonlinear Engineering, 2013
Large amplitude free vibration behavior of thin, isotropic rectangular plate configurations are expressed in the form of simple closed-form solutions by using an application of the Ritz method based on coupled displacement fields.
Gunda Jagadish Babu
doaj   +1 more source

Buckling of Steel Conical Panels Reinforced with Stiffeners

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2023
Conical shells and their panels are important elements of building structures, but have not been studied sufficiently. This paper explores buckling of truncated steel conical panels reinforced with an orthogonal grid of stiffener plates.
Alexey A. Semenov   +2 more
doaj   +1 more source

Solving Non-Linear Fractional Variational Problems Using Jacobi Polynomials

open access: yesMathematics, 2019
The aim of this paper is to solve a class of non-linear fractional variational problems (NLFVPs) using the Ritz method and to perform a comparative study on the choice of different polynomials in the method.
Harendra Singh   +2 more
doaj   +1 more source

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