Results 31 to 40 of about 10,018,380 (290)

The Effect of Residual Stress on the Electromechanical Behavior of Electrostatic Microactuators

open access: yesActive and Passive Electronic Components, 2008
This work simulates the nonlinear electromechanical behavior of different electrostatic microactuators. It applies the differential quadrature method, Hamilton's principle, and Wilson-θ integration method to derive the equations of motion of ...
Ming-Hung Hsu
doaj   +1 more source

Reducing the computational requirements of the differential quadrature method

open access: yesNumerical Methods for Partial Differential Equations, 1996
This paper shows that the weighting coefficient matrices of the differential quadrature method (DQM) are centrosymmetric or skew-centrosymmetric if the grid spacings are symmetric irrespective of whether they are equal or unequal. A new skew centrosymmetric matrix is also discussed.
W. Chen, Xinwei Wang, Yongxi Yu
openaire   +4 more sources

Differential quadrature element analysis using extended differential quadrature [PDF]

open access: yes, 2000
The extended differential quadrature (EDQ) has been proposed. A certain order derivative or partial derivative of the variable function with respect to the coordinate variables at an arbitrary discrete point is expressed as a weighted linear sum of the ...
Chen, Chang-New
core   +1 more source

Quadrature Methods for Stiff Ordinary Differential Systems [PDF]

open access: yesMathematics of Computation, 1981
The quadrature methods are based upon a substitution of an explicit A -stable first approximation into a generalized convolution formula. They are A -stable, explicit, and of arbitrarily high order. The generalized convolution formula is derived and its
openaire   +2 more sources

Research on the Frequency Response and Dynamic Range of the Quadrature Fiber Optic Fabry–Perot Cavity Microphone Based on the Differential Cross Multiplication Demodulation Algorithm

open access: yesSensors, 2021
A quadrature fiber optic Fabry–Perot cavity microphone based on a differential cross multiplication algorithm consists of a pair of fibers and a membrane.
Baokai Ren   +6 more
doaj   +1 more source

A Least Squares Differential Quadrature Method for a Class of Nonlinear Partial Differential Equations of Fractional Order

open access: yesMathematics, 2020
In this paper a new method called the least squares differential quadrature method (LSDQM) is introduced as a straightforward and efficient method to compute analytical approximate polynomial solutions for nonlinear partial differential equations with ...
Constantin Bota   +4 more
doaj   +1 more source

Asymptotics for Stieltjes polynomials, Padé-type approximants, and Gauss-Kronrod quadrature [PDF]

open access: yes, 2002
23 pages, 1 figure.-- MSC1991 codes: Primary: 41A21, 42C05; Secondary: 30E10.MR#: MR1894475 (2002m:41021)Zbl#: Zbl 1020.41019We study the asymptotic properties of Stieltjes polynomials outside the support of the measure as well as the asymptotic ...
López Lagomasino, Guillermo   +11 more
core   +1 more source

The application of the differential quadrature method based on a piecewise polynomial to the vibration analysis of geometrically nonlinear beams

open access: yesComputer Assisted Methods in Engineering and Science, 2022
The paper deals with the application of the differential quadrature method based on a piecewise polynomial to the nonlinear vibration analysis of beams. The initial-boundary-value problem is solved to study the computational stability of the method. The
Artur Krowiak
doaj  

Cubic spline based differential quadrature method: A numerical approach for fractional Burger equation

open access: yesResults in Physics, 2021
In this research paper, our main objective is to represent a direct numerical approach for solving time-fractional Burger’s equation using modified hybrid B-spline basis function. The Caputo derivative is used to discretize the time-fractional derivative
Muhammad Sadiq Hashmi   +4 more
doaj   +1 more source

Controlling Radiative Phonons in the van der Waals Ferroelectric NbOI2

open access: yesAdvanced Materials, EarlyView.
Using a simple mirror geometry, this work demonstrates local‐density‐of‐optical‐states control of THz phonon emission in van der Waals ferroelectric NbOI2. By engineering the photonic environment, the phonon Q‐factor, linewidth, peak frequency, and emission intensity are reversibly tuned by over an order of magnitude, revealing radiative phonons as ...
Baolong Zhang   +5 more
wiley   +1 more source

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