Results 31 to 40 of about 252,524 (293)
Applied Sciences, 2023 In this paper, parametric forced tuned solid ball dampers (TSBD) are considered for vibration control of engineering structures in an untypical way. The special feature of the presented investigation is to evaluate the potential application of parametric
Michael Reiterer, Joachim Muik
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On the observation of nonclassical excitations in Bose–Einstein condensates
New Journal of Physics, 2016 In the recent experimental and theoretical literature well-established nonclassicality criteria from the field of quantum optics have been directly applied to the case of excitations in matter-waves.
Andreas Finke +2 more
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Analytical solutions of the simplified Mathieu’s equation [PDF]
INCAS Bulletin, 2016 Consider a second order differential linear periodic equation. The periodic coefficient is an approximation of the Mathieu’s coefficient. This equation is recast as a first-order homogeneous system.
Nicolae MARCOV
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Parametric Nanomechanical Amplification at Very High Frequency [PDF]
, 2009 Parametric resonance and amplification are important in both fundamental physics and technological applications. Here we report very high frequency (VHF) parametric resonators and mechanical-domain amplifiers based on nanoelectromechanical systems (NEMS).
Feng, X. L. +2 more
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Magnetoelastic Principal Parametric Resonance of a Rotating Electroconductive Circular Plate
Shock and Vibration, 2017 Nonlinear principal parametric resonance and stability are investigated for rotating circular plate subjected to parametric excitation resulting from the time-varying speed in the magnetic field.
Zhe Li, Yu-da Hu, Jing Li
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Dynamics of a dual-mass resonant vibration screen in a first approximation
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2018 The decision on creation of a new energy-efficient vibration screen using combination parametrical resonance is presented. The decision makes it possible to expand functional and operational opportunities of vibration machines.
N. N. Dentsov, A. V. Koshelev
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Parametric Resonance of Optically Trapped Aerosols [PDF]
Physical Review Letters, 2007 The Brownian dynamics of an optically trapped water droplet are investigated across the transition from over to under-damped oscillations. The spectrum of position fluctuations evolves from a Lorentzian shape typical of over-damped systems (beads in liquid solvents), to a damped harmonic oscillator spectrum showing a resonance peak. In this later under-
DI LEONARDO, ROBERTO +7 more
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The oscillator's model with broken symmetry
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015 The equations of the oscillator motion are considered. The exact solutions are given in the form of exponents with an additional parameter that characterizes the asymmetry of the oscillations.
Dmitry B Volov
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Anomalies of ac driven solitary waves with internal modes: Nonparametric resonances induced by parametric forces [PDF]
, 2001 We study the dynamics of kinks in the $\phi^4$ model subjected to a parametric ac force, both with and without damping, as a paradigm of solitary waves with internal modes.
A. Sánchez +27 more
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Optical parametric resonances [PDF]
Journal of Physics B: Atomic and Molecular Physics, 1976 The response of a two-level atom driven by a strong resonant amplitude-modulated field is calculated in the Bloch model. The population difference and dipole moment show a resonant behaviour when the Rabi frequency is a multiple of the modulation frequency. This phenomenon is related to the resonant AC Stark effect and is the optical counterpart of the
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