Results 31 to 40 of about 1,090,698 (289)

The experimental performance of a nonlinear dynamic vibration absorber [PDF]

, 2013
This paper investigates the physical behaviour andeffectiveness of a nonlinear dynamic vibration absorber(NDVA). The nonlinear absorber considered involves anonlinear hardening spring which was designed andattached to a cantilever beam excited by a ...
Ferguson, N.S., Brennan, M.J., Hsu, Y.S.
core   +2 more sources

Theoretical Investigation of Backward Optical Parametric Oscillator Pumped by Vortex Beams

Frontiers in Physics, 2022
Nonlinear generation and manipulation of vortex beams have emerged as a research hot topic in recent years. During nonlinear frequency conversions, orbital angular momentum will transfer from the fundamental wave to harmonic waves. In this work, we study
Xiaosi Zhu, Jianlang He, Yawen Su, Yan Chen, Xiaopeng Hu   +4 more
doaj   +1 more source

Periodic Solutions of the Duffing Harmonic Oscillator by He's Energy Balance Method

Journal of Applied and Computational Mechanics, 2015
Duffing harmonic oscillator is a common model for nonlinear phenomena in science and engineering. This paper presents He´s Energy Balance Method (EBM) for solving nonlinear differential equations. Two strong nonlinear cases have been studied analytically.
A. M. El-Naggar, Gamal Ismail
doaj   +1 more source

Cosmology of nonlinear oscillations

Physics Letters B, 2003
5 pages, latex.
openaire   +2 more sources

A Dimensionless Parameter Analysis of a Cylindrical Tube Electromagnetic Vibration Energy Harvester and Its Oscillator Nonlinearity Effect

Energies, 2018
This paper investigates a single degree of freedom oscillator in a cylindrical tube vibration energy harvester which is applicable in a low-frequency range.
Zhenwei Liu, Xu Wang, Ran Zhang, Liuping Wang   +3 more
doaj   +1 more source

Including orbital fluctuations in the noise spectrum of autonomous circuits [PDF]

, 2011
We discuss the impact of orbital fluctuations on the noise spectrum of a free-running oscillator, exploiting a rigorous nonlinear perturbative analysis based on the Floquet theory, and providing evidence of its relevance for high-Q oscillators.
Bonani, Fabrizio, Traversa, Fabio Lorenzo, Fabio L. Traversa, Fabrizio Bonani   +3 more
core   +1 more source

On the interaction of exponential non-viscous damping with symmetric nonlinearities [PDF]

, 2008
This paper studies the interaction between non-viscous damping and nonlinearities for nonlinear oscillators with reflection symmetry. The non-viscous damping function is an exponential damping model which adds a decaying memory property to the damping ...
Wagg, DJ, Sieber, Jan, Sieber, J., Adhikari, S., Wagg, D.J., Adhikari, Sondipon, Wagg, D.   +6 more
core   +1 more source

Approximate Analytic Frequency of Strong Nonlinear Oscillator

Mathematics
In this paper, a new analytic expression for the frequency of vibration of a strong nonlinear polynomial-type oscillator is introduced. The method for frequency calculation is based on the transformation of the nonlinear oscillators into linear ones ...
Livija Cveticanin, Miodrag Zukovic, Dragan Cveticanin   +2 more
doaj   +1 more source

Energy Partition Oscillator and Necessary and Sufficient Conditions of Energy Localization

MATEC Web of Conferences, 2012
A strongly nonlinear conservative oscillator describing the dynamics of energy partition between two identical linearly coupled Duffing oscillators is introduced and analyzed.
Pilipchuk V.N.
doaj   +1 more source

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh, Bharti Garg, Maximilian Black, Masoud Taleb, Nahid Talebi   +4 more
wiley   +1 more source