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Full modeling of the mooring non-linearity in a two-dimensional floating structure
(Pergamon-Elsevier Science Ltd, 2006-01-05)
The dynamic behavior of a two-dimensional model of a small floating structure anchored by chains is analyzed. The structure is first modeled as a two-degrees-of-freedom oscillator with a strongly non-linear stiffness and ...
Three-dimensional formulation of a strain-based geometrically nonlinear piezoelectric beam for energy harvesting
(Sage Publications Ltd, 2021-01)
In this paper, the authors introduce a model of a strain-based geometrically nonlinear piezoelectric beam for modeling energy harvesters. A nonlinear shear-underfomable 3-D Rayleigh’s beam theory is used to model the ...
Nonlinear uncertainty model of a magnetic suspension system
(Pergamon-Elsevier Science Ltd, 2004-11)
The nonlinear identification of a nominal model as well as the uncertainty bounds of a magnetic suspension system is developed. This system has a nonsymmetric dynamic behavior; it has an undershoot but not an overshoot. ...
Method for real-time measurement of the nonlinear refractive index
(American Institute of Physics, 2019-09)
In this work, we propose a novel method for continuous real-time measurement of the dynamics of the nonlinear refractive index n2. This is particularly important for characterizing phenomena or materials (such as biological ...
A piezoelectric beam model with geometric, material and damping nonlinearities for energy harvesting
(IOP Publishing, 2020-09-10)
To predict electrical generation in piezoelectric small-scale beam energy harvesting devices, it is important to have a complete mathematical model that captures the different associated phenomena. In the literature, some ...
Light generation at the anomalous dispersion high energy range of a nonlinear opal film
(Optical Society of America, 2009-12)
We study experimentally and theoretically light propagation and generation at the high energy range of a close-packed fcc photonic crystal of polystyrene spheres coated with a nonlinear material. We observe an enhancement ...
Coupled axial/torsional vibrations of drill-strings by means of non-linear model
(Pergamon-Elsevier Science Ltd, 2007-07)
In the present work a geometrically non-linear model is presented to study the coupling of axial and torsional vibrations on a drill-string, which is described as a vertical slender beam under axial rotation. It is known ...
Nonlinear dynamic analysis of a 3D guyed mast
(Springer, 2018-04-26)
Guyed masts are examples of structures extensively used in civil engineering. During the service life of the structure, the guys tension values can vary due to various circumstances. The consequences can range from operational ...
Structural Behavior of Barges in High-Energy Collisions against Bridge Piers
(American Society of Civil Engineers, 2016-02)
The collision of barges against bridge piers is an extreme loading condition that usually governs the design of bridges that span navigable waterways. The magnitude and time variation of impact forces depend on several ...
Internal resonance in a vibrating beam: A zoo of nonlinear resonance peaks
(Public Library of Science, 2016-09-20)
In oscillating mechanical systems, nonlinearity is responsible for the departure from proportionality between the forces that sustain their motion and the resulting vibration amplitude. Such effect may have both beneficial ...