Results 21 to 30 of about 252,524 (293)
Periodic boudary-value problem for Hill's equation in the case of parametric resonance [PDF]
Компьютерные исследования и моделирование, 2014 Necessary and sufficient conditions for the existence of solutions of nonlinear nonautonomous periodic problem for Hills equation in the case of parametric resonance.
Petr Viktorovich Kulish +2 more
doaj +1 more source
Dynamic Analysis on the Parametric Resonance of the Tower–Multicable–Beam Coupled System
Applied Sciences, 2022 Considering the effect of the bridge deck’s bending stiffness and the indirect effect of adjacent cables (CEB), this paper aims to propose a refined model to reliably analyze the complex internal resonance mechanism of the tower–multicable–beam coupled ...
Shuanhai He +5 more
doaj +1 more source
Journal of Marine Science and Engineering, 2020 Although it is widely accepted that accurate modeling of wave energy converters is essential for effective and reliable design, it is often challenging to define an accurate model which is also fast enough to investigate the design space or to perform ...
Giuseppe Giorgi +3 more
doaj +1 more source
Parametric resonance in the ultracold Rydberg plasma under the influence of an acoustic wave
Геофизический журнал, 2020 The article considers weakly ionized ultracold Rydberg plasma under the influence of an acoustic wave of the terahertz range. The effect of an acoustic wave on Langmuir oscillations of Rydberg plasma is described using a hydrodynamic approach.
V.M. Rylyuk, L.M. Kuzmina, M.I. Skipa
doaj +1 more source
Parametric Resonance of Hopf Bifurcation [PDF]
Nonlinear Dynamics, 2005 We investigate the dynamics of a system consisting of a simple, harmonic oscillator with small nonlinearity, small damping and small parametric forcing in the neighborhood of 2:1 resonance. We assume that the unforced system exhibits the birth of a stable limit cycle as the damping changes sign from positive to negative (a supercritical Hopf ...
Rand, Richard +2 more
openaire +1 more source
Numerical Study of Forced Vibration Suppression by Parametric Anti-Resonance
Archives of Acoustics, 2016 The parametric anti-resonance phenomenon as an active damping tool for suppression of externally excited resonant vibration is numerically studied herein. It is well known fact that the anti-resonance phenomenon, i.e.
Ludĕk PEŠEK +2 more
doaj +1 more source
Forward flight of birds revisited. Part 2: short-term dynamic stability and trim [PDF]
Royal Society Open Science, 2014 Thrust generation by flapping is accompanied by alternating pitching moment. On the down-stroke, it pitches the bird down when the wings are above its centre of gravity and up when they are below; on the up-stroke, the directions reverse.
G. Iosilevskii
doaj +1 more source
Excitation of a Kaluza-Klein mode by parametric resonance [PDF]
, 1997 In this paper we investigate a parametric resonance phenomenon of a Kaluza-Klein mode in a $D$-dimensional generalized Kaluza-Klein theory. As the origin of the parametric resonance we consider a small oscillation of a scale of the compactification ...
E. W. Kolb +11 more
core +4 more sources
Efficient parametric amplification in high and very high frequency piezoelectric nanoelectromechanical systems [PDF]
, 2010 Parametric amplification in nanomechanical structures is demonstrated by modulating a purely intrinsic mechanical parameter of the system—the stress—via piezoelectric electromechanical coupling.
Karabalin, R. B. +2 more
core +1 more source
CHARTS STRUTT-INCE FOR GENERALIZED MATHIEU EQUATION [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2012 We have investigated the solution of the generalized Mathieu equation. With the aid of diagrams Stratton-Ince built the instability region, the condition can occur when the parametric resonance.
R.I. Parovik
doaj +1 more source