Results 11 to 20 of about 15,981,515 (305)

Modified poisson series to implement the method of multiple scales [PDF]

open access: yesMathematical Methods in the Applied Sciences, 2016
The method of multiple scales is a global perturbation technique that has resulted to be very useful in perturbed ordinary differential equations characterized by disparate time scales. The general principle behind the method is that the solution to the differential equation is uniformly expanded in terms of two or more independent variables, referred ...
Juan F. Navarro, Navarro, Juan F.
openaire   +5 more sources

Analyzing Frequency response of nano electro mechanical-resonator based on non-local elasticity theory [PDF]

open access: yesمجله مدل سازی در مهندسی, 2017
  In recent years, many experimental observations showed that by decreasing the micro- and nano-beams thicknesses size effect appears and classical continuum theory cannot be used for micro- and nano-beams modeling.
mehdi maleki   +2 more
doaj   +1 more source

Response Analysis of Nonlinear Viscoelastic Energy Harvester with Bounded Noise Excitation

open access: yesMachines, 2022
Energy harvesting has become a popular topic in recent years. A number of studies have been conducted in the field of vibration energy harvesting system (VEHS).
Yuanhui Zeng   +3 more
doaj   +1 more source

Geosensor Network Optimisation to Support Decisions at Multiple Scales

open access: yes, 2023
Geosensor networks are often used to monitor processes at different spatial scales. Existing approaches for configuring geosensor locations (i.e. sample design) do not address two key challenges: 1) they are limited to a single scale of analysis and do ...
Comber, L, Harris, P.
core   +1 more source

Enhancing Electrical Generation Efficiency through Parametrical Excitation and Slapping Force in Nonlinear Elastic Beams for Vibration Energy Harvesting

open access: yesSensors, 2023
This study aims to enhance conventional vibration energy harvesting systems (VEHs) by repositioning the piezoelectric patch (PZT) in the middle of a fixed–fixed elastic steel sheet instead of the root, as is commonly the case.
Yi-Ren Wang, Chun-Hsiao Kuo
doaj   +1 more source

Size-dependent nonlinear vibration analysis of nanobeam embedded in multi-layer elastic media and subjected to electromechanical and thermomagnetic loadings

open access: yesCurved and Layered Structures, 2022
In this work, magneto-electro-mechanical size-dependent nonlinear vibration analysis of nanobeam embedded in multi-layer of Winkler, Pasternak, quadratic and cubic nonlinear elastic media is presented.
Sobamowo Gbeminiyi Musibau
doaj   +1 more source

Method of multiple scales with three time scales [PDF]

open access: yesPAMM, 2007
AbstractSome confusion appears in the literature regarding the extension of the method of multiple scales to three or more time scales. While the work of Murdock and Wang [1] correctly indicates some obstructions to such an extension in some types of problems, other work suggests that the extension should almost never be possible [2]. These pessimistic
Peter Kramer   +3 more
openaire   +1 more source

Multi-frequency piezomagnetoelastic energy harvesting in the monostable mode [PDF]

open access: yesJournal of Theoretical and Applied Vibration and Acoustics, 2018
The present article investigates effects of the multi-frequency excitation on the output power of a piezomagnetoelastic energy harvester. The piezomagnetoelastic power generator is assumed to operate in the mono-stable mode.
Amin Yousefpour   +2 more
doaj   +1 more source

Vibration control of nonlinear dynamical system via negative cubic velocity feedback [PDF]

open access: yesERU Research Journal
    The aim of this study is to highlight how specific parameters, especially nonlinear feedback control, can enhance system stability and optimize vibration control.
O. M. khaled   +4 more
doaj   +1 more source

An IRT Analysis of Motive Questionnaires: The Unified Motive Scales [PDF]

open access: yes, 2012
Multiple inventories claiming to assess the same explicit motive (achievement, power, or affiliation) show only mediocre convergent validity. In three studies (N = 1685) the structure, nomological net, and content coverage of multiple existing motive ...
Gerstenberg, Friederike X. R.   +1 more
core   +1 more source

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