Non Linear Program
Mostrando 13-24 de 76 artigos, teses e dissertações.
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13. Modelagem numérica de estruturas de concreto armado utilizando o programa ATENA. / Numerical modelling of reinforcement concrete structures using the program ATENA.
Com o avanço tecnológico dos computadores e o desenvolvimento de soluções para problemas não lineares através do método dos elementos finitos, hoje é possível fazer uma análise mais complexa e mais próxima da realidade. É de extrema importância à verificação dos resultados obtidos pelos programas com a realidade e saber em quais casos esses m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2011
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14. Inelastic analysis of semi-rigid composite structures under fire conditions
This paper presents the application of a proposed numerical approach, denoted as SAAFE Program (System for Advanced Analysis for Fire Engineering), developed to provide an inelastic analysis of steel and composite (steel-concrete) 2D semi-rigid framed-structures under fire conditions. The proposed structural model allows an accurate description of the struct
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-12
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15. Transpiration rate response to water deficit during vegetative and reproductive phases of upland rice cultivars.
Water deficit is one of the most important abiotic stress limiting upland rice yield in the ?Cerrado? region of Brazil. Selecting drought tolerant cultivars is an important strategy to overcome this constraint. Two greenhouse experiments were conducted at Santo Antônio de Goiás, state of Goiás, Brazil, to compare the response of normalized transpiration r
Scientia Agricola. Publicado em: 2011
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16. Non linear geometric analysis of soil-structure interaction via BEM/FEM coupling / Análise não linear geométrica do acoplamento solo-estrutura através da combinação MEC-MEF
This work presents an alternative coupling of the boundary element method (BEM) and the finite element method (FEM) to create a computer program for non linear geometric analysis of frames coupled to continuous domains, applied to soil-structure interaction. A linear elastic behavior is considered for the soil, modeled by BEM. An alternative formulation is a
Publicado em: 2010
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17. Development of mechanical, reliability and optimization models for application in reinforced concrete structures / Desenvolvimento de modelos mecânicos, de confiabilidade e de otimização para aplicação em estruturas de concreto armado
This work presents some developments in the mechanical modeling of reinforced concrete bar structures, as well in the coupling of reliability and RBDO optimization models, with the purpose of obtaining optimal dimensions considering the safety requirements specified in design. As for the mechanical modeling via Finite Element Method (FEM), in addition to geo
Publicado em: 2010
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18. Gas de Bose diluido fracamente confinado / Dilute Bose gas weakly confined
A critical study of atomic Bose-Einstein condensates (BECs) is presented. Taking as a starting point the physics of the free gas, we study the effect of weakly confining potentials. Two cases were studied in detail: i) an atomic gas in a finite square well potential with a few bound states; and ii) a system confined in two-dimensions by an isotropic harmonic
Publicado em: 2010
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19. Implementação dos efeitos da não linearidade do tensor de Reynolds em modelos de turbulência baseados na hipótese de Boussinesq / Implementation of non linear effects of Reynolds tensor on turbulence models based on Boussinesq approximation
The main goal of this work is to implement and evaluate the correction proposed by Spalart [53] on turbulence models based on Boussinesq approximation. The objective of this correction is to capture non linear effects of Reynolds tensor, which are not correctly predicted and modeled by Boussinesq approximation. In his work, Spalart [53] proposed the correcti
Publicado em: 2009
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20. DYNAMIC ANALYSIS OF HYPERLASTIC CIRCULAR MEMBRANES / ANÁLISE DINÂMICA DE MEMBRANAS CIRCULARES HIPERELÁSTICAS
This work presents an analysis of the nonlinear vibration response of a prestretched hyperelastic circular membrane subjected to finite deformations. The membrane material is assumed to be isotropic, homogeneous and neo-Hookean. Based on the theory of finite deformations for hyperelastic membranes, a variational formulation is developed. First the exact solu
Publicado em: 2009
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21. Desempenho produtivo e reprodutivo e parâmetros sanguíneos de vacas leiteiras alimentadas com diferentes fontes de gordura no período de transição e inicio de lactação / Productive and reproductive performance and blood parameters of dairy cows feeding with different fat sources in transition period and early lactation
This study was carried out to evaluate the use of different fat sources in dairy rations, in transition period and early lactation on follicular dynamics, reproductive efficiency, nutrients intake and digestibility, composition and milk yield, composition of protein fraction and energy balance. Third Holstein cows, with production of 30,0 Kg/cow/day on previ
Publicado em: 2009
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22. História natural, biologia reprodutiva, parâmetros populacionais e comunidades de pequenos mamíferos não-voadores em três habitats florestados do Pantanal de Poconé, MT
The non-volant small mammals were studied at Fazenda Aparecida in the municipality of Nossa Senhora do Livramento, Pantanal of Poconé, MT, Brazil. The objectives of this study were to describe some aspects of natural history, reproductive biology, populations parameters of some species, as well as describe and compare communities of small mammals in three f
Publicado em: 2008
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23. Avaliação em ciencia, tecnologia e inovação : o caso do programa de propriedade intelectual da FAPESP / Evaluation of Science, technology and innovation : the case of FAPESP intellectual property program
The evaluation of research activities is essential for the goverrunental agencies involved in funding large programs of science, technology and innovation (S,T&I). Currently, evaluation initiatives have been used for legitimating of public spending resources and also to verify the resul.ts and impacts of the funded projects. Evaluation of such programs produ
Publicado em: 2008
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24. Ferramentas computacionais para a anÃlise de dutos com defeitos de corrosÃo
Pipelines are one of the safest means for transport of petroleum and gas, and the one with the smallest risk to the environment. They also possess high efficiency and productivity. In spite of their exceptional capabilities, they are also a great source of concern of the petroleum companies, since they can be subjected to several types defects, in particular
Publicado em: 2008