Results 51 to 60 of about 166,550 (244)

Vibration analysis of arbitrary straight-sided quadrilateral plates using a simple first-order shear deformation theory

open access: yesResults in Physics, 2018
This paper studies the free vibration characteristics of arbitrary straight-sided quadrilateral plates using a simple first-order shear deformation theory (SFSDT), which contains only four unknown displacement components.
Dongyan Shi   +3 more
doaj   +1 more source

A Proposal of Mode Polynomials for Efficient Use of Component Mode Synthesis and Methodology to Simplify the Calculation of the Connecting Beams

open access: yesJournal of Marine Science and Engineering, 2020
Analytical method using Rayleigh–Ritz method has not been widely used recently due to intensive use of finite element analysis (FEA). However as long as suitable mode functions together with component mode synthesis (CMS) can be provided, Rayleigh–Ritz ...
Jeong Hee Park, Duck Young Yoon
doaj   +1 more source

Free and Forced Vibration Characteristics Analysis of a Multispan Timoshenko Beam Based on the Ritz Method

open access: yesShock and Vibration, 2021
The uniform formulation of dynamic vibration analysis of multispan beams is presented by using an efficient domain decomposition method in this paper.
Cong Gao   +5 more
doaj   +1 more source

Hamiltonian truncation study of supersymmetric quantum mechanics: S-matrix and metastable states

open access: yesJournal of High Energy Physics, 2019
We implement the Rayleigh-Ritz method in supersymmetric quantum mechanics with flat directions, and extract the S-matrix and metastable resonances.
Bruno Balthazar   +2 more
doaj   +1 more source

Analytic Variational Investigation of Euclidean SU(3) Gauge Theory

open access: yes, 1993
Analytic variational techniques for lattice gauge theories based on the Rayleigh-Ritz(RR) method were previously developed for euclidean SU(2) gauge theories in 3 and 4 dimensions.
Anishetty   +3 more
core   +2 more sources

Randomized Orthogonalization Process With Reorthogonalization

open access: yesNumerical Linear Algebra with Applications, Volume 32, Issue 4, August 2025.
ABSTRACT The dimension reduction technique of random sketching is advantageous in significantly reducing computational complexity. In orthogonalization processes like the Gram‐Schmidt (GS) algorithm, incorporating random sketching results in a halving of computational costs compared to the classical/modified Gram‐Schmidt (CGS/MGS) algorithms, while ...
Yongseok Jang, Laura Grigori
wiley   +1 more source

Application of the Classical Rayleigh-Ritz Method in Dynamics of Circular Archces

open access: yesEngineering Transactions, 1993
The paper deals with Rayleigh-Timoshenko and Bernoulli-Euler models of circular arches with extensible or inextensible axes clamped with free radial sliding at both ends.
B. Olszowski
doaj  

Stabilized Krylov Subspace Recurrences via Randomized Sketching

open access: yesNumerical Linear Algebra with Applications, Volume 32, Issue 3, June 2025.
ABSTRACT Recurrences building orthonormal bases for polynomial Krylov spaces have been classically used for approximation purposes in various numerical linear algebra contexts. Variants aiming to limit memory and computational costs by using truncated recurrences often have convergence constraints.
Valeria Simoncini, YiHong Wang
wiley   +1 more source

An acoustic modeling of the three-dimensional annular segment cavity with various impedance boundary conditions

open access: yesResults in Physics, 2018
A three-dimensional Fourier series method (3D-FSM) is applied to study the acoustic characteristics of annular segment acoustic cavity with various impedance boundary conditions.
Yujie Xiao   +4 more
doaj   +1 more source

Free Vibrations of Anisotropic Nano-Objects with Rounded or Sharp Corners

open access: yesNanomaterials, 2021
An extension of the Rayleigh–Ritz variational method to objects with superquadric and superellipsoid shapes and cylinders with cross-sections delimited by a superellipse is presented.
Lucien Saviot
doaj   +1 more source

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