Now showing items 1-10 of 11773
Damage detection in nonlinear structures using discrete-time volterra series
Structural damage identification is basically a nonlinear phenomenon; however, nonlinear procedures are not used currently in practical applications due to the complexity and difficulty for implementation of such techniques. ...
Accurate measurement of nonlinear ellipse rotation using a phase-sensitive method
(Optical Society of America - OSAWashington, DC, 2014)
We report on the accurate measurement of nonlinear ellipse rotation (NER) by means of a phase-sensitive method employing a dual-phase lock-in. The magnitudes and signs of pure refractive electronic nonlinearities of silica ...
On an Active Control for a Structurally Nonlinear Mechanical System, Taking Into Account an Energy Pumping
(Asme-amer Soc Mechanical Eng, 2009-07-01)
The purpose of this work is to investigate the control of the oscillations and the suppression of vibrations in damped and coupled oscillators. In this sense, we look into the potential of using a nonlinear energy sink in ...
A nonlinear electromechanical pendulum arm with a Nonlinear Energy Sink control (NES) approach
This paper considers the nonlinear dynamics of an electromechanical device with a pendulum arm and a Nonlinear Energy Sink (NES) put on the point of the pendulum suspension. It is shown that the (NES) is capable of absorbing ...
Nonlinear Dynamic Behavior, Deterministic Chaos and Nonlinear Control of a Micro Electro Mechanical Actuator System (MEMS)
(Destech Publications, Inc, 2015-01-01)
Micro Electro Mechanical Systems (MEMS) are systems composite by electrical and mechanical devices that interact by means of transducers elements, thus constituting one single and whole system. On the study of dynamic ...
Nonlinear dynamics of rotating box FGM beams using nonlinear normal modes
In this work an analysis is performed on the nonlinear planar vibrations of a functionally graded beam subjected to a combined thermal and harmonic transverse load in the presence of internal resonance. Adopting the direct ...
On resonant elliptic systems with rapidly rotating nonlinearities
(Khayyam Publishing, 2012)
We study a Neumann problem for a nonlinear elliptic system. Unlike previous results in the literature of Landesman–Lazer type, our existence theorem allows rapid rotations on the nonlinear term.
Stiffness nonlinearity in structural dynamics: Our friend or enemy?
The effects of nonlinearity, particularly stiffness nonlinearity, has been of concern to structural engineers for many years. Primarily this has been because this type of nonlinearity can cause unpredictable dynamics, and ...
Lead-germanate glasses and fibers: A practical alternative to tellurite for nonlinear fiber applications
We report on the fabrication of novel lead-germanate glasses and fibers. We have characterized these glasses in terms of their thermal properties, Raman spectra and refractive indices (both linear and nonlinear) and present ...