Constitutive Models
Mostrando 37-48 de 145 artigos, teses e dissertações.
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37. Desenvolvimento de modelos biomecânicos tridimensionais do membro superior: mão e cotovelo
The comprehension of the forces to which the upper members are subjected is essential to improve rehabilitation and chirurgical procedures. Recently, biomechanical models have been developed to reproduce the behavior of tissues and living systems by means of mathematical equations, such that, by using engineering tools, it is possible to improve our knowledg
Publicado em: 2011
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38. Um modelo elasto-plástico para a análise da aderência em peças de concreto armado / An elasto-plastic model for analysis of bond in reinforced concrete
The bond mechanism between deformed bars and concrete is a complex phenomenon, influenced by many parameters. Many models have been developed over the years regarding this subject, but only a few have satisfactorily reproduced the physical phenomenon. In this work, to simulate the bond behavior, we propose a two-dimensional interface model where both concret
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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39. Estudo da interação de paredes de alvenaria estrutural com a estrutura de fundação
This dissertation presents a study of factors that influence the soil-structure interaction mechanism in buildings and their implications on the behavior of them. Firstly, an extensive bibliographical review was made, and this study broached the main concepts of the SSI research field, such as constitutive models of soil, discrete models to represent soil, s
Publicado em: 2010
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40. LEGITIMIDADE DA REPRESENTAÇÃO EM CONSELHOS DE SAÚDE: O CASO DO CONSELHO MUNICIPAL DE SAÚDE DE VITÓRIA-ES
The Public Policies Management Councils emerged on the Brazilian scene with the 1988 Federal Constitution, which enshrined the social participation principle in various constitutional provisions. Thus, the Brazilian legal system has set up an hybrid institutional architecture, in that it focuses on the combination of representation and social participation.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/09/2009
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41. Análise de sensibilidade topológica em modelos constitutivos multi-escalas / Topological Sensitivity Analysis in Constitutive Multi-Scale Models
The purpose of the present work is to carry out a topological sensitivity analysis in constitutive multi-scale models. By making use of the Hill-Mandel Principle of Macro-Homogeneity and the concept of volume average, a variational formulation was established to derive a clearly structured axiomatic framework for constitutive multi-scale models of the presen
Publicado em: 2009
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42. Mathematical Modeling and Numeriacal Methods for Simulation of the Heat Conduction in Liquid Helium / Modelagem Matemática e Métodos Numéricos para Simulação da Condução do Calor no Hélio Líquido
The element helium, found mainly in natural gas reserves, condenses at temperature of 4.2K, and is the unique known substance that remains in liquid to absolute zero. In the liquid phase, the helium presents still another phase change in 2.19K, where passes of common liquid to superfluous liquid, with almost zero viscosity. These properties give the helium i
Publicado em: 2009
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43. Modelos constitutivos hiperelásticos para elastômeros incompressíveis : ajuste, comparação de desempenho e proposta de um novo modelo / Hyperelastic constitutive models for incompressible elastomers: fitting, performance comparison and proposal of a new model
Este trabalho apresenta inicialmente um estudo sobre diversos modelos constitutivos para elastômeros incompressíveis disponíveis na literatura, sendo considerados tanto modelos clássicos quanto contribuições mais recentes. As respectivas expressões para energia de deformação são implementadas em um código computacional que permite a obtenção das
Publicado em: 2009
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44. As obrigaÃÃes do amor : um estudo sobre as relaÃÃes de gÃnero e poder com mulheres de camadas mÃdias urbanas nascidas no inÃcio do sÃculo XX
This work aims at understanding gender relations experienced by married middle-class women and born in Recife between 1919 and 1931. Considering gender relations as power relations, it is important to comprehend here the varied dimensions that power assumes in their lives. Contrarily to the gender theories which view power as something purely relational, in
Publicado em: 2009
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45. Modelos constitutivos para materiais hiperelásticos: estudo e implementação computacional / Constitutive models for hyperelastic materials: study and computational implementation
The main objective of this work is to implement nonlinear hyperelastic constitutive models in a computational code of geometrically nonlinear analysis of shells. For this purpose, concepts of linear and tensor algebras, kinematics, strain, stress, balances, variational principles, numerical methods and hyperelasticity are necessary. Such program uses the pos
Publicado em: 2008
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46. ImplementaÃÃo e AplicaÃÃo do Modelo de Visco-dano para problemas geomecÃnicos
A great advance in development of constitutive models for better simulation of geomechanical materials behavior has been observed in the last decades. A continuous medium subjected to degradation of its mechanical properties has a differentiated constitutive answer; hence itâs required the adoption of models based in Mechanic of Continuous Damage formulated
Publicado em: 2008
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47. Análises tensão-deformação de estruturas de solo grampeado. / Stress-Strain analysis of soil nailed structures.
The limit equilibrium methods that are frequently used for design of soi nailing structures do not provide information about the structures stress and strain. However, the techniques success depends on the displacements that mobilize the nails strength. Therefore it is desirable to predict the structures displacement, during and after the excavation; the for
Publicado em: 2008
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48. The prevention of metaphorisation in the instructional pedagogic discourse for the teaching of English / A prevenção de metaforização no discurso pedagógico instrucional para o ensino de língua inglesa
This study aimed at investigating the functionings of instructional pedagogic discourse for the teaching of English as a foreign language in private regular schools. Due to the observation of a contradiction between the desire for homogeneity and the constitutive character of heterogeneity, the study presented the hypothesis of the occurrence of discursive m
Publicado em: 2008