Results 61 to 70 of about 12,383 (219)

Traveling wave analysis of rotating functionally graded graphene platelet reinforced nanocomposite cylindrical shells with general boundary conditions

open access: yesResults in Physics, 2019
This paper studies traveling wave motions of rotating multi-layered functionally graded graphene platelet reinforced composite (FG-GPLRC) cylindrical shell under general boundary conditions.
Zhaoye Qin   +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

Angle‐Free Cluster‐Robust Ritz Value Bounds for Restarted Block Eigensolvers

open access: yesNumerical Linear Algebra with Applications, Volume 32, Issue 1, February 2025.
ABSTRACT Convergence rates of block iterations for solving Hermitian eigenvalue problems typically measure the errors of Ritz values approximating eigenvalues. These errors are usually bounded in terms of principal angles between the initial or iterative subspace and the invariant subspace associated with the target eigenvalues.
Ming Zhou, Andrew Knyazev, Klaus Neymeyr
wiley   +1 more source

Analytic Buckling Solution of Composite Classical Rectangular Thin Plates Using Galerkin Variational Approach

open access: yesAdvances in Civil Engineering, Volume 2025, Issue 1, 2025.
This paper focuses on investigating the mechanical buckling behavior of composite and orthotropic classical rectangular plates using the Galerkin theory. By utilizing the classical plate theory of elasticity, the governing equations for the functionally graded plate material subjected to a uniaxially distributed load along the x and y axes are derived ...
Thompson Edozie Okeke   +4 more
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  

Coupled anharmonic oscillators: the Rayleigh-Ritz approach versus the collocation approach

open access: yes, 2010
For a system of coupled anharmonic oscillators we compare the convergence rate of the variational collocation approach presented recently by Amore and Fernandez (2010 Phys.Scr.81 045011) with the one obtained using the optimized Rayleigh-Ritz (RR) method.
Amore P   +5 more
core   +1 more source

Solution to the Equations of the Moment Expansions [PDF]

open access: yes, 2011
We develop a formula for matching a Taylor series about the origin and an asymptotic exponential expansion for large values of the coordinate. We test it on the expansion of the generating functions for the moments and connected moments of the ...
C. Stubbins   +10 more
core   +4 more sources

Influence of Slenderness Ratio on Buckling Behavior of Reinforced Concrete Columns: A Finite Element Analysis

open access: yesAdvances in Materials Science and Engineering, Volume 2025, Issue 1, 2025.
Reinforced concrete columns (RCCs) are critical load‐bearing elements in structural systems, where stability is often governed by buckling, particularly in slender members subjected to axial compression. While extensive studies exist on column buckling, there remains a need for integrated approaches that couple analytical formulations with advanced ...
Rajib Karmaker   +3 more
wiley   +1 more source

Eigenfunction Convergence of the Rayleigh-Ritz-Meirovitch Method and the FEM

open access: yesShock and Vibration, 2007
Eigenfunction convergence characteristics of the finite element method and the Rayleigh-Ritz method with quasicomparison functions (RRMM) are compared. The RRMM has previously proved to be superior in comparing eigenvalue convergence characteristics. The
C.A. Morales, R. Goncalves
doaj   +1 more source

Estimates for the errors in the Rayleigh-Ritz method [PDF]

open access: yesPacific Journal of Mathematics, 1953
with homogeneous linear boundary conditions, denoted by (C). It is assumed that the parameter λ does not appear in the boundary conditions. The region R of the problem may be of any number of dimensions; the symbol ff(P)dP will mean an integral over /?, dP standing for the Euclidean volume element; (/, g) will stand for ff(P)g{P)dP; and ||/||, for (f ...
openaire   +2 more sources

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