Results 21 to 30 of about 12,056 (269)

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

Free Transverse Vibration of Circular Plate of Stepped Thickness with General Boundary Conditions by an Improved Fourier–Ritz Method

open access: yesShock and Vibration, 2022
In this investigation, free vibration of stepped circular Mindlin plate with arbitrary boundary conditions is presented by an improved Fourier–Ritz method.
Qingjun Hao, Zhaobo Chen, Wenjie Zhai
doaj   +1 more source

Buckling Analysis of Functionally Graded Tapered Microbeams via Rayleigh–Ritz Method

open access: yesMathematics, 2022
In the present study, the buckling problem of nonhomogeneous microbeams with a variable cross-section is analyzed. The microcolumn considered in this study is made of functionally graded materials in the longitudinal direction and the cross-section of ...
Bekir Akgöz, Ömer Civalek
doaj   +1 more source

Effect of End Mass Rotation on the Dynamic Characteristics of a Cantilever Beam Using the Rayleigh-Ritz Principle

open access: yesNTU Journal of Engineering and Technology
The energy form of the Rayleigh-Ritz Principle was used to investigate the effect of rotating a mass at the free end on the dynamic characteristics of the cantilever beam.
Tahseen Taha Othman
doaj   +1 more source

Free Vibration Analysis of Size-Dependent, Functionally Graded, Rectangular Nano/Micro-plates based on Modified Nonlinear Couple Stress Shear Deformation Plate Theories [PDF]

open access: yesMechanics of Advanced Composite Structures, 2017
In the present study, a vibration analysis of functionally graded rectangular nano-/microplates was considered based on modified nonlinear coupled stress exponential and trigonometric shear deformation plate theories.
Korosh Khorshidi, Abolfazl Fallah
doaj   +1 more source

Linear Stochastic Models of Nonlinear Dynamical Systems

open access: yes, 1998
We investigate in this work the validity of linear stochastic models for nonlinear dynamical systems. We exploit as our basic tool a previously proposed Rayleigh-Ritz approximation for the effective action of nonlinear dynamical systems started from ...
B. A. Finlayson   +17 more
core   +2 more sources

Monte Carlo calculation for systems consisting of several coordinate patches [PDF]

open access: yes, 1994
I investigate the time step dependence of Monte Carlo simulations for coordinate-spaces consisting of several patches. It is shown that a naive kinetic term does not necessarily converge to the same spectrum as a Hamiltonian calculation. Then an improved
Claus Vohwinkel   +7 more
core   +2 more sources

Approximation of eigenvalues of some unbounded self-adjoint discrete Jacobi matrices by eigenvalues of finite submatrices [PDF]

open access: yesOpuscula Mathematica, 2007
We investigate the problem of approximation of eigenvalues of some self-adjoint operator in the Hilbert space \(l^2(\mathbb{N})\) by eigenvalues of suitably chosen principal finite submatrices of an infinite Jacobi matrix that defines the operator ...
Maria Malejki
doaj  

Determination of Resonances by the Optimized Spectral Approach

open access: yes, 2012
The Rayleigh-Ritz procedure for determining bound-states of the Schr\"{o}dinger equation relies on spectral representation of the solution as a linear combination of the basis functions.
Kościk, Przemysław   +2 more
core   +1 more source

Independent coordinate coupling method for vibration analysis of a functionally graded carbon nanotube–reinforced plate with central hole

open access: yesAdvances in Mechanical Engineering, 2019
In this article, the free vibration of a functionally graded carbon nanotube–reinforced plate with central hole is investigated by means of the independent coordinates-based Rayleigh–Ritz method.
Yan Guo, Yanan Jiang, Bin Huang
doaj   +1 more source

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