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Now showing items 1-9 of 9
Use of nonlinear asymmetrical shock absorber to improve comfort on passenger vehicles
(Journal of Sound and Vibration, 2014-03-31) [Artigo]
In this study the behaviour of two different types of shock absorbers, symmetrical (linear) and asymmetrical (nonlinear) is compared for use on passenger vehicles. The analyses use different standard road inputs and include ...
Influence of ideal and non-ideal excitation sources on the dynamics of a nonlinear vibro-impact system
(Journal of Theoretical and Applied Mechanics, 2013-01-01) [Artigo]
The objective of the present work is to analyze the dynamics of a vibro-impact system consisting of two blocks of different mass coupled by a spring with two stages. Two different types of excitation sources for the system ...
Analytical study of the nonlinear behavior of a shape memory oscillator: Part I-primary resonance and free response at low temperatures
(Nonlinear Dynamics, 2010-03-01) [Artigo]
In this work, the response of a single-degree-of-freedom shape memory oscillator subjected to the excitation harmonic has been investigated. Equation of motion is formulated assuming a polynomial constitutive model to ...
Nonlinear control in an electromechanical transducer with chaotic behaviour
(Meccanica, 2014-08-01) [Artigo]
The electromechanical transducer considered in this work is composed of a mechanical oscillator linked to an electronic circuit. Simulations results have determined that for some combination of parameters the electromechanical ...
A note on non-linear phenomena in a non-ideal oscillator, with a snap-through truss absorber, including parameter uncertainties
(Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 2013-03-01) [Artigo]
This work considers the vibrating system that consists of a snap-through truss absorber coupled to an oscillator under excitation of an electric motor with an eccentricity and limited power, characterizing a non-ideal ...
Preventing chaotic motion in tapping-mode atomic force microscope
(Journal of Control, Automation and Electrical Systems, 2014) [Artigo]
During the last 30 years the Atomic Force Microscopy became the most powerful tool for surface probing in atomic scale. The Tapping-Mode Atomic Force Microscope is used to generate high quality accurate images of the samples ...
Application of passive control to energy harvester efficiency using a nonideal portal frame structural support system
(Journal of Intelligent Material Systems and Structures, 2014-03-01) [Artigo]
An analysis of a new energy harvester model is presented, based on a simple portal frame structure, considered a nonideal system due to the kind of excitation influenced by the response of the system, such as a direct ...
Analytical study of the nonlinear behavior of a shape memory oscillator: Part II-resonance secondary
(Nonlinear Dynamics, 2010-06-01) [Artigo]
In Part II of this work, we investigated the dynamics of the shape memory oscillator, in the particular case of the secondary resonances. We used the equation of motion developed in Part I (Piccirillo et al., Nonlinear ...
On a control design to an AFM microcantilever beam, operating in a tapping-mode, with irregular behavior
(Proceedings of the ASME Design Engineering Technical Conference, 2011-12-01) [Trabalho apresentado em evento]
In last decades, control of nonlinear dynamic systems became an important and interesting problem studied by many authors, what results the appearance of lots of works about this subject in the scientific literature. In ...