Results 21 to 30 of about 191,827 (344)

Modeling and Simulation of Linear and Nonlinear MEMS Scale Electromagnetic Energy Harvesters for Random Vibration Environments

open access: yesThe Scientific World Journal, 2014
The simulation results for electromagnetic energy harvesters (EMEHs) under broad band stationary Gaussian random excitations indicate the importance of both a high transformation factor and a high mechanical quality factor to achieve favourable mean ...
Farid Khan   +2 more
doaj   +1 more source

Nonlinear Damping and Field-aligned Flows of Propagating Shear Alfvén Waves with Braginskii Viscosity

open access: yesThe Astrophysical Journal, 2023
Braginskii magnetohydrodynamics (MHD) provides a more accurate description of many plasma environments than classical MHD since it actively treats the stress tensor using a closure derived from physical principles.
Alexander J. B. Russell
doaj   +1 more source

Continuous dependence on initial data and high energy blowup time estimate for porous elastic system

open access: yesCommunications in Analysis and Mechanics, 2023
In this paper, we establish two conclusions about the continuous dependence on the initial data of the global solution to the initial boundary value problem of a porous elastic system for the linear damping case and the nonlinear damping case ...
Jiangbo Han , Runzhang Xu, Chao Yang
doaj   +1 more source

Nonlinear damping and quasi-linear modelling [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015
The mechanism of energy dissipation in mechanical systems is often nonlinear. Even though there may be other forms of nonlinearity in the dynamics, nonlinear damping is the dominant source of nonlinearity in a number of practical systems. The analysis of such systems is simplified by the fact that they show no jump or bifurcation behaviour,
Elliott, S.J.   +2 more
openaire   +4 more sources

Theory of magnon motive force in chiral ferromagnets [PDF]

open access: yes, 2016
We predict that magnon motive force can lead to temperature dependent, nonlinear chiral damping in both conducting and insulating ferromagnets. We estimate that this damping can significantly influence the motion of skyrmions and domain walls at finite ...
Güngördü, Utkan, Kovalev, Alexey A.
core   +3 more sources

Dynamics of Nonlinear Coupled Electrostatic Micromechanical Resonators under Two-Frequency Parametric and External Excitations

open access: yesShock and Vibration, 2010
In this paper, nonlinear dynamics and chaos of electrostatically actuated MEMS resonators under two-frequency parametric and external excitations are investigated analytically and numerically.
Wen-Ming Zhang, Guang Meng, Ke-Xiang Wei
doaj   +1 more source

Nonlinear Oscillations of Magnetization in a Tangentially Magnetized Ferromagnetic Film Resonator

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. Resonators based on epitaxially grown single-crystal films of yttrium iron garnet are used in various applications of microwave electronics.
R. V. Haponchyk   +2 more
doaj   +1 more source

Displacement Transmissibility Characteristics of Harmonically Base Excited Damper Isolators with Mixed Viscous Damping

open access: yesShock and Vibration, 2013
The viscous damping force in the mixed form as fd(x˙)=c1x˙+c2|x˙|x˙ can well describe damping characteristics of isolators and dampers in many cases. In this paper, performance characteristics of single-degree-of-freedom (SDOF) linear-stiffness isolators
Xiaojuan Sun, Jianrun Zhang
doaj   +1 more source

A Study of the Hydrodynamic Performance of a Pitch-type Wave Energy Converter–Rotor

open access: yesEnergies, 2019
The effect of hydrodynamic performance of the wave energy converter (WEC)–rotor based on linear potential flow theory due to nonlinear viscous damping was investigated.
Sunny Kumar Poguluri   +2 more
doaj   +1 more source

Isolated resonances and nonlinear damping [PDF]

open access: yesNonlinear Dynamics, 2018
Author preprint version - manuscript under ...
Giuseppe Habib   +2 more
openaire   +3 more sources

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