Results 1 to 10 of about 1,882,532 (216)

Modified multiple time scale method for solving strongly nonlinear damped forced vibration systems

open access: yesResults in Physics, 2018
In this paper, modified multiple time scale (MTS) method is employed to solve strongly nonlinear forced vibration systems. The first-order approximation is only considered in order to avoid complexicity.
M.A. Razzak, M.Z. Alam, M.N. Sharif
doaj   +3 more sources

Nonlinear Torsional Vibration Analysis of Nanorods in the Presence of Surface Energy Effect: Multi-Mode Galerkin Method [PDF]

open access: yesMechanics of Advanced Composite Structures, 2022
In this paper, the nonlinear torsional vibrations and internal resonances of nanorods are investigated by considering the surface energy effects. For this purpose, Hamilton’s principle is implemented to derive the nonlinear governing equation of motion ...
Reza Nazemnezhad, Sahar Farahmandrad
doaj   +1 more source

Coupled-Mode Parabolic Equations for the Modeling of Sound Propagation in a Shallow-Water Waveguide with Weak Elastic Bottom

open access: yesJournal of Marine Science and Engineering, 2022
In this work, a mode parabolic equation method with interacting modes accounting for the weak elasticity at the bottom is developed. An important feature of the proposed method is that computations of elastic modes are avoided and that the solution is ...
Sergey Kozitskiy
doaj   +1 more source

Impacts of Small-Scale Effect and Nonlinear Damping on the Nonlinear Vibrations of Electrostatic Microresonators

open access: yesMicromachines, 2023
Although the small-scale effect and nonlinear damping on the nonlinear vibration of microbeam electrostatic resonators are important, they have been overlooked by researchers.
Dayao Meng, Kun Huang, Wei Xu
doaj   +1 more source

Response Statistics of a Shape Memory Alloy Oscillator with Random Excitation

open access: yesApplied Sciences, 2021
This paper aimed to explore analytically the influences of random excitation on a shape memory alloy (SMA) oscillator. Firstly, on the basis of the deterministic SMA model under a harmonic excitation, we introduce a stochastic SMA model with a narrow ...
Rong Guo, Qi Liu, Junlin Li, Yong Xu
doaj   +1 more source

Implementing a New Scale Technique in the M-Estimation Method to Estimate Parameters of Multiple Linear Regression: Simulation Study

open access: yesTikrit Journal of Administrative and Economic Sciences, 2023
The goal of this study is to develop a new technique for estimating the parameters of a multiple linear regression by using M-estimation based on scale estimator to handle the influence of outlier values.
Bekhal Samad Sedeeq   +3 more
doaj   +1 more source

Size-dependent Nonlinear Forced Vibration Analysis of Viscoelastic/Piezoelectric Nano-beam [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
In this paper, the nonlinear forced vibration of isotropic viscoelastic/ piezoelectric Euler-Bernoulli nano-beam is investigated. For this purpose, the consistent couple stress theory is utilized for modeling the viscoelastic/piezoelectric nano-beam ...
Zahra Tadi Beni   +2 more
doaj   +1 more source

A DATA MANAGEMENT METHOD FOR EFFICIENT SEARCH AND RENDERING OF MULTIPLE LARGE SCALE POINT CLOUDS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Recently, with the progress of laser scanning technology, it has become possible to scan several environments such as buildings, roads, and cities easily and at a low cost. There are typically three scanning methods: TLS (Terrestrial Laser Scanning), MMS
T. Maeno, H. Date, S. Kanai
doaj   +1 more source

Nonlinear Vibration Analysis of a Beam with a Breathing Crack

open access: yesApplied Sciences, 2019
The phenomena of sub- and super-harmonic responses make up one of the prominent nonlinear characteristics of a beam with a breathing crack. In order to fully understand the behaviors of sub- and super-harmonic resonances, it is necessary to analyze the ...
Hui Long, Yilun Liu, Kefu Liu
doaj   +1 more source

Technical note: Multiple wavelet coherence for untangling scale-specific and localized multivariate relationships in geosciences [PDF]

open access: yesHydrology and Earth System Sciences, 2016
The scale-specific and localized bivariate relationships in geosciences can be revealed using bivariate wavelet coherence. The objective of this study was to develop a multiple wavelet coherence method for examining scale-specific and localized ...
W. Hu, B. C. Si
doaj   +1 more source

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