Structural Rigidity
Mostrando 13-24 de 65 artigos, teses e dissertações.
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13. Numerical analysis of the tunnelling with emphases in the ground-support interaction in shotcrete at early ages / Análise numérica de escavações subterrâneas com ênfase na interação entre o maçiço e o suporte em concreto projetado a baixas idades
This thesis presents a numerical analysis of the ground/support interaction, considering the transient behavior of the shotcrete while the gradual loading of the support occurs, due to progressive advance of the excavation face. The numerical analyses were carried out according to the finite elements method in tunnelling with circular section, under various
Publicado em: 2008
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14. ESTUDO EXPERIMENTAL DO REFORÇO À FORÇA CORTANTE DE VIGAS DE CONCRETO ARMADO COM COMPÓSITOS DE FIBRAS DE CARBONO / EXPERIMENTAL STUDY OF REINFORCED CONCRETE BEAMS STRENGTHENED FOR SHEAR FORCE WITH CARBON FIBER COMPOSITES
This analysis involves the experimental study of eight reinforced concrete beams of T section ( cm bw=15cm e h=40cm), with cm 300cm of length, bisupported and with the same longitudinal reinforcement, strengthened for shear force with carbon fiber composites (CFC). They were divided in two series of four beams, with a reference beam for each series, where th
Publicado em: 2008
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15. In the plot of trauma: relations between the personality of women with breast cancer and the oncologic recurrence from a psychoanalytic psychosomatic view. / Na trama do trauma: relações entre a personalidade de mulheres acometidas por câncer de mama e a recidiva oncológica sob a ótica da psicossomática psicanalítica
The scientific community has become increasingly interested in the psychological aspects of breast cancer over the last two decades. Several studies on this issue suggest that patients personality can affect the course of the disease, but only a few address this issue specifically. The purpose of the present study was to compare dynamic aspects and structura
Publicado em: 2008
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16. Structural design of concrete mat foundations. / Projeto de estrutura de fundação em concreto do tipo radier.
This work presents some aspects related to geometry and rigidity classification and structural analysis of reinforced and prestressed concrete mat foundations. Some strategies for modeling and solving the structural system are discussed, with focus on grid analogy with elastic restraints and soil-structure interaction. Details of the computer aided design of
Publicado em: 2007
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17. Influência do comportamento estrutural no erro de posicionamento de uma máquina de cinemática paralela. / Influence of the structural behavior in the error of positioning of a parallel kinematic machine.
In spite of the effort spent by the academic and industrial communities (goods, patents and laboratory prototypes), the Parallel Kinematics Machines - PKMs - they still present an inexpressive participation in the market of machine-tools and robots. One of the reasons for this fact is their low indexes of accuracy and precision, in comparison with the machin
Publicado em: 2007
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18. A Constituição Federal de 1988 e a integração regional : o desafio da harmonização tributária
As an effect of the growing interdependence in international relations, regional integration was conceived to face globalization, with a remarkable influence in politics and law, since the first steps of the European experience. In Latin America, regional integration ideas have blossomed in the 60s. Among its experiences, MERCOSUL is the one with the most ad
Publicado em: 2007
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19. CONECTOR DE CISALHAMENTO EM PERFIL FORMADO A FRIO: ANÁLISE VIA MODELAGEM COMPUTACIONAL
In a composite system, a steel beam (laminated, welded or cold formed) is associated with a concrete slab, forming a composite beam. The interaction between concrete and steel can be mechanical, by friction or, in some cases, only by adherence. One of the major advantages of the composite beams is the increase in strength and stiffness due to association of
Publicado em: 2006
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20. Study on formability in hydroforming steel sheets tailored welded blanks / Estudo da conformabilidade na hidroconformação de recortes de chapas de aço soldados a laser
The increasing number of vehic1es and a more rigorous environmental legislation, are forcing automobile industries and research centers to develop new materials and manufacturing processes to the production of parts with higher mechanical properties, better formability and sheet thickness reduction, without comprirnising the rigidity and structural stability
Publicado em: 2006
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21. Estudo de geração de trincas térmicas em discos de freios de veículos comerciais
The disc brake systems, when compared with the drum brake systems currently used in heavy-duty vehicles, resent significant advantages, such as: better performance in relation to temperature and speed and better braking comfort. On the other hand, the use of those systems submits the brake discs to much higher mechanical and thermal stress than that in brake
Publicado em: 2006
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22. Contributions to the study of the metallic domes / Contribuições ao estudo das cúpulas metálicas
In a general way, this work deals with structural systems usually adopted in the project of metallic domes. Emphasis was given to a derived arrangement derived of the Schwedler system, recently used in projects developed the state of São Paulo. The work can be divided in two parts, the first one is about the connections that compose the structural system st
Publicado em: 2005
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23. Interpretação de deformação e recalque na fase de montagem de estrutura de concreto com fundação em estaca cravada / Strain and settlement interpretation in the assembly of a concrete structure supported by driven piles
Although encouraged by several authors and by the Brazilian Foundation Code, reports of actual column loads measurement in natural scale are not frequent in our technical literature, especially in the case of buildings supported by deep foundations. Results of load and settlement measurements at 20 contiguous columns of a structure built in pre-cast reinforc
Publicado em: 2005
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24. Otimização de pilares de concreto armado mediante uniformização do índice de confiabilidade / Optimization of reinforced concrete columns and calculation of the index of reliability
Currently, it searches minimization of the costs for a structure that satisfies the security principles, with respect to the states use and rupture limits, and the impositions of norms techniques. However, no structure is total insurance. The project involves uncertainties, therefore it in such a way has variations in loading how much in the resistant capaci
Publicado em: 2004