High Order Curvature
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Flexural Behavior of Beams Reinforced with Steel Bars Exceeding the Nominal Yield Strength
Abstract If steel manufactures usually comply with the minimum code specifications, the nominal yield strength of rebar can however be significantly exceeded in many countries, depending on the steel manufacturing processes. Such an increase in yield strength can have negative effects on the flexural behavior of beams designed as tension controlled, and redu
Lat. Am. j. solids struct.. Publicado em: 2016-05
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2. Construction of a Morphing Wing Rib Actuated by a NiTi Wire
ABSTRACT: The main goal of this paper is to analyze if it is feasible to employ a trained shape memory alloy wire as a linear actuator to modify the camber of a morphing wing rib. In order to achieve this purpose, a morphing rib with a compliant trailing edge was proposed, developed, and subjected to structural analyses to ensure its flexibility. After the r
J. Aerosp. Technol. Manag.. Publicado em: 2015-12
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3. Closed-form Solution for Freely Vibrating Functionally Graded Thick Doubly Curved Panel-A New Generic Approach
Abstract Today, double curvature shell panels are the main parts of each design because their geometrical characteristics provide high strength to weight ratio, aerodynamic form and beauty for the structures such as boats, submarines, automobiles and buildings. Also, functionally graded materials which present multiple properties such as high mechanical and
Lat. Am. j. solids struct.. Publicado em: 2015-09
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4. Contribuição para os usuários de sistemas CAD/CAM/CNC em operação de fresamento de topo em aço para moldes e matrizes / Contribution to the users of systems CAD/CAM/CNC in end milling operation in steel for molds and dies
The increased in the demand for plastic products and the need for reduction manufacturing times, and the growing dependence of man on the computer in present day, especially in manufacturing activities, has resulted in constant research of technological developments in order to supply these needs. In dies and molds manufacturing industry for plastic injectio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/06/2011
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5. Pilares de concreto armado em situação de incêndio submetidos à flexão normal composta. / Reinforced concrete columns in fire under uniaxial bending.
According to Brazilian Codes, reinforced concrete structures must be verified under high temperatures, in order to assure the load bearing capacity to allow the safe evacuation of the users and the fire fighting and to reduce the fire spread to other compartments. For reinforced concrete structures, the columns must be analyzed carefully. The significant red
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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6. BEHAVIOR OF SLENDER HIGH STRENGTH CONCRETE COLUMNS UNDER UNIAXIAL AND BIAXIAL ECCENTRIC LOADS / COMPORTAMENTO DE PILARES ESBELTOS DE CONCRETO DE ALTA RESISTÊNCIA SOB FLEXÃO COMPOSTA RETA E OBLÍQUA
This work presents an experimental study of the behavior of slender high strength concrete columns under uniaxial and biaxial eccentric compression loads. Eight columns with cross-section of 15x25 cm and height of 300 cm were tested, divided into two series. In the first series, the concrete strength was 40 MPa and the four columns were tested under biaxial
Publicado em: 2011
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7. Sobre a aplicaÃÃo de Gauss para hipersuperfÃcies com curvatura de ordem superior constante em esferas / On the application of Gauss for hypersurface with bending of constant superior order in spheres
Nesse trabalho iremos considerar uma hipersuperficie conexa, completa e orientÃvel da esfera unitÃria euclidiana Sn+1 com curvatura de ordem superior constante positiva. Provaremos sob certas condiÃÃes geomÃtricas, que caso a imagem da AplicaÃÃo de Gauss de M estiver contida em um hemisfÃrio fechado,entÃo M Ã uma hipersuperfÃcie totalmente umbÃli
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/01/2009
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8. Projeto e fabricação de nao-estruturas por litografa interferometrica / Design and fabrication of nano-structures by interforometric lithography
In this work the interferometric lithography technique was developed for recording periodic relief nano-structures, one and bi-dimensional, on silicon and glass substrates. In particular, the work is focused in two directions: the study of the profile of the structures recorded in photorresist, through the superimposition of interference light patterns, and
Publicado em: 2008
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9. Different schematic eyes and their accuracy to the in vivo eye: a quantitative comparison study
Current ophthalmic technology allows the manipulation of eye components, such as anterior cornea and lens, of the human eye with a considerable precision and customization. This technology opens up the possibility of exploiting some characteristics of the eye in order to improve the methods of correcting optical aberrations. Moreover, product development and
Brazilian Journal of Physics. Publicado em: 2007-06
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10. Local and global symmetries in gauge theories / Simetrias globais e locais em teorias de calibre
This thesis deals with the geometric formulation of classical gauge theories, or Yang-Mills theories, regarded as an important class of models that must be included in any attempt to establish a general mathematical framework for classical field theory. Such a formulation must come in (at least) two variants: the hamiltonian version which has gone through a
Publicado em: 2007
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11. Aerogeofísica aplicada à compreensão do sistema de empurrões da sequência Santa Terezinha de Goiás, Brasil Central
Recent Airborne Survey data from the Goias state was processed and interpreted in the present dissertation. Radiometric data was adquired sampling between 1 s and 0.1 s for magnetometry, flying at a height of 100 meters, with spacing of 500m and tied with control lines with spacing of 5000m, collected througout NS production lines. We describe the techniques
Publicado em: 2007
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12. An-edge preserving multigrid-like for image denoising and inpainting / Uma técnica multimalhas para eliminação de ruídos e retoque digita"
Techniques based on the Well-Balanced Flow Equation have been employed as an efficient tool for edge preserving noise removal. Although effective, this technique demands high computational effort, rendering it not practical in several applications. This work aims at proposing a multigrid-like technique for speeding up the solution of the Well- Balanced Flow
Publicado em: 2006