Results 101 to 110 of about 326,006 (283)

Free vibrations of non-uniform CNT/fiber/polymer nanocomposite beams

open access: yesCurved and Layered Structures, 2017
In this paper, free vibrations of non-uniform multi-scale nanocomposite beams reinforced by carbon nanotubes (CNTs) are studied. Mori-Tanaka (MT) technique is employed to estimate the effective mechanical properties of three-phase CNT/fiber/polymer ...
Seidi J., Kamarian S.
doaj   +1 more source

Numerical Simulation of PDEs by Local Meshless Differential Quadrature Collocation Method

open access: yesSymmetry, 2019
In this paper, a local meshless differential quadrature collocation method based on radial basis functions is proposed for the numerical simulation of one-dimensional Klein–Gordon, two-dimensional coupled Burgers’, and regularized long wave equations ...
I. Ahmad   +4 more
semanticscholar   +1 more source

Reducing Inhomogeneous MT (ihMT) Acquisition Time Using Frequency Alternation at Low Duty Cycle for Single Offset (FALSO) MT Preparations

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate Frequency Alternation at Low duty cycle for Single Offset (FALSO) as a novel Magnetization Transfer (MT) preparation scheme to increase speed and/or spatial resolution of inhomogeneous MT (ihMT) MRI by reducing the number of volumes required.
Gopal Varma   +5 more
wiley   +1 more source

A Note on the DQ Analysis of Anisotropic Plates

open access: yes, 2002
Recently, Bert, Wang and Striz [1, 2] applied the differential quadrature (DQ) and harmonic differential quadrature (HDQ) methods to analyze static and dynamic behaviors of anisotropic plates.
Chen, W, He, Weixing, Zhong, Tingxiu
core   +1 more source

Trajectory Control of Manipulator Robots With Uncertainties: A Saturated Continuous Integral Sliding Mode Approach

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study addresses the trajectory tracking control for manipulator robots with uncertainties. The main objective is to ensure that the robot follows a desired trajectory despite the presence of uncertainties/disturbances and considering control input constraints. The approach is developed in the framework of continuous integral sliding modes.
Emanuel Ortiz‐Ortiz   +3 more
wiley   +1 more source

Numerical Solutions of Odd Order Linear and Nonlinear Initial Value Problems Using a Shifted Jacobi Spectral Approximations

open access: yesAbstract and Applied Analysis, 2012
A shifted Jacobi Galerkin method is introduced to get a direct solution technique for solving the third- and fifth-order differential equations with constant coefficients subject to initial conditions.
A. H. Bhrawy, M. A. Alghamdi
doaj   +1 more source

Vibration Analysis of Magneto-Electro-Thermo NanoBeam Resting on Nonlinear Elastic Foundation Using Sinc and Discrete Singular Convolution Differential Quadrature Method

open access: yesModern Applied Science, 2019
Magneto-Electro-Thermo nanobeam resting on a nonlinear elastic foundation is presented. This beam is subjected to the external electric voltage and magnetic potential, mechanical potential and temperature change.
O. Ragb, Mokhtar Mohamed, M. S. Matbuly
semanticscholar   +1 more source

Bending Analysis of Thickness‐ and Shear‐Deformable Materially Imperfect Composite Shells With von Kármán‐Type Geometric Nonlinearities

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Geometrically nonlinear static analysis of materially imperfect composite doubly curved shells is investigated via the generalised differential quadrature method. The effects of both shear and thickness deformation are considered through a thickness‐ and shear‐deformable third‐order theory formulated in curvilinear coordinates, while the ...
Behrouz Karami   +3 more
wiley   +1 more source

Development of a novel strong-form meshless technique : random differential quadrature (RDQ) method with applications for 2-D multiphysics simulation of pH-sensitive hydrogel [PDF]

open access: yes, 2019
Differential Quadrature (DQ) is one of the efficient techniques for derivative approximation, but it always requires a regular domain discretized with all the points distributed in a fixed pattern only along the straight lines. This severely restricts the DQ while solving problems with the irregular domain discretized by the random field nodes.
openaire   +3 more sources

Single Smooth Waveform Command‐Shaping Control of Overhead Crane Systems Utilizing Two‐Stage Acceleration–Deceleration Profile for Short‐Moving Point‐to‐Point Maneuver

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern industrial demand for efficient material handling in confined spaces has driven the need for overhead cranes capable of short‐distance point‐to‐point maneuvers without compromising payload stability. Conventional three‐stage shaper profiles, experiencing acceleration, cruising, and deceleration, become inefficient or infeasible for ...
Mohammed Alfares   +2 more
wiley   +1 more source

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