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On the dynamic behaviour of a nonlinear system weakly connected to a linear single degree-of-freedom system
(2011-12-01)
This paper discusses the dynamic behaviour of a nonlinear two degree-of-freedom system consisting of a harmonically excited linear oscillator weakly connected to a nonlinear attachment that behaves as a hardening Duffing ...
An overview on a nonideal system with three and a half degrees of freedom
(2005-12-01)
The present paper studies a system comprised of two blocks connected by springs and dampers, and a DC motor with limited power supply fixed on a block, characterizing a non-ideal problem. This DC motor exciting the system ...
On Nonlinear Dynamics and Control of A Particular Portal Frame Foundation Model, Excited by a Non-Ideal Motor
(2003-12-08)
The nonlinear dynamic response and a nonlinear control method of a particular portal frame foundation for an unbalanced rotating machine with limited power (non-ideal motor) are examined. Numerical simulations are performed ...
ON GRAZING BIFURCATIONS IN AN AEROELASTIC SYSTEM WITH MULTI-SEGMENTED NONLINEARITY IN THE PITCH DEGREE OF FREEDOM
(Amer Soc Mechanical Engineers, 2014-01-01)
A nonlinear characterization based on modern methods of nonlinear dynamics is performed to identify the effects of a multi segmented nonlinearity on the response of an aeroelastic system. This system consists of a plunging ...
On the response at the excitation frequency of a two degrees of freedom nonlinear oscillator
(2017-01-01)
This paper presents an overview of the main theoretical advances and experimental analyses, achieved by the authors in recent years of collaborative research in the field of nonlinear dynamics of coupled oscillators. The ...
Nonlinear dynamic model and simulation of morphing wing profile actuated by shape memory alloys
(2012-06-06)
Morphing aircraft have the ability to actively adapt and change their shape to achieve different missions efficiently. The development of morphing structures is deeply related with the ability to model precisely different ...
Optimization of the parameters of a PID controller
(ABCMRibeirao Preto, 2013-11-03)
The methodology proposed is applied and it is presented the results for two case studies, one for the dynamic positioning of a vessel modeled with one degree of freedom (longitudinal movement) and another with three degrees ...
On non-linear and non-ideal interactions in two vibrating problems
(2008-06-17)
In practical situations, the dynamics of the forcing function on a vibrating system cannot be considered as given a priori, and it must be taken as a consequence of the dynamics of the whole system. In other words, the ...
Strong coupling QCD and effective hadronic interactions
(World Scientific Publ Co Pte Ltd, 2003-01-01)
The aim of this work is to implement the mechanism of link rearrangement predicted in the strong coupling limit of Hamiltonian lattice QCD - in a constituent quark model in which constituent quarks, links and junctions are ...
Nonlinear Analysis and Characterization of Piezoaeroelastic Energy Harvesters with Discontinuous Nonlinearities
(2022-01-01)
The effects of freeplay and multi-segmented nonlinearities in the pitch degree of freedom on the dynamical responses of a two-degree-of-freedom piezoaeroelastic energy harvesting system are investigated. The nonlinear ...