Daniel Pereira
University of São Paulo
Laser pumpingTerahertz radiationAirfoilAeroelasticityAbsorption spectroscopyOpticsPhysicsFar-infrared laserAerodynamicsOptical pumpingInfraredNonlinear systemAtomic physicsNuclear physicsEcologyElastic scatteringMaterials scienceComputer scienceOptoelectronicsLaserMechanicsWavelengthStructural engineeringDistributed feedback laser
131Publications
21H-index
1,621Citations
Publications 179
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#1Daniel PereiraH-Index: 21
Last. Domingos A. RadeH-Index: 15
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Abstract The emergence of automated manufacturing techniques has allowed the realization of the so-called tow-steered composite laminates, in which the fibers are deposited following continuous curvilinear paths. This enables to broaden the design space to satisfy a variety of design objectives. Previous studies have shown that conventional composites can be designed to maximize the modal frequencies and modal damping factors. However, similar investigations have not been devoted to tow-steered ...
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#1Daniel PereiraH-Index: 21
Last. Domingos A. RadeH-Index: 15
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Abstract This present paper is devoted to the numerical and experimental investigation of the modal characteristics of composite laminates, with emphasis on damping. Complementing previous studies dedicated to conventional laminates, one considers variable-angle tow laminates, in which the fibers are deposited following curvilinear trajectories. The main objective is to characterize the influence of fiber steering on the damping levels, and evaluate the possibility of achieving increased damping...
4 CitationsSource
#1Cecilia Volkmer-Ribeiro (CNPq: National Council for Scientific and Technological Development)H-Index: 2
#1Cecilia Volkmer-Ribeiro (CNPq: National Council for Scientific and Technological Development)H-Index: 2
Last. Mark H. Sabaj (Academy of Natural Sciences of Drexel University)H-Index: 13
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During a pilot survey, sponges and mollusks were sampled from the bottom of the middle Xingu River (rapids) and lower Xingu River (ria) via hand-picking in shallows and trawling and surface-supplied dives in deeper waters. The survey revealed a benthic community composed of eight sponge species in four genera and three families, and added six species to the Xingu Basin fauna. Sponges exhibited distinct variation in body shape corresponding to local environmental conditions such as water depth, c...
1 CitationsSource
Abstract In this work, viscoelastic materials are adopted for handling aeroelastic features of typical section models with three degrees-of-freedom, which present non-smooth, free-play type nonlinearities in their control surface. A rotational viscoelastic damper is added to the resilient element associated to the control surface motion of the typical section. Equations of motion are derived accounting for the viscoelastic damper dependence on frequency and temperature. For this, a fractional de...
3 CitationsSource
#1Daniel PereiraH-Index: 21
Last. Domingos A. RadeH-Index: 15
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#2Daniel PereiraH-Index: 21
Last. Domingos A. RadeH-Index: 15
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#1Thiago de P. SalesH-Index: 3
#1Thiago de Paula Sales (UFU: Federal University of Uberlandia)H-Index: 5
Last. Domingos A. RadeH-Index: 15
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Abstract Nonlinear aeroelastic systems are prone to the appearance of limit cycle oscillations, bifurcations, and chaos. Such problems are of increasing concern in aircraft design since there is the need to control nonlinear instabilities and improve safety margins, at the same time as aircraft are subjected to increasingly critical operational conditions. On the other hand, in spite of the fact that viscoelastic materials have already been successfully used for the attenuation of undesired vibr...
5 CitationsSource
#1Giorgio Carelli (UniPi: University of Pisa)H-Index: 15
#2N. IoliH-Index: 14
Last. Franco Strumia (UniPi: University of Pisa)H-Index: 25
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