Plane Frames
Mostrando 13-24 de 30 artigos, teses e dissertações.
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13. Análise das estratégias de movimento adotadas durante a realização de manuseio de carga.
Despite recent technological advances, occupational activities of manual nature are still essential in many sectors and industries. Such activities impose risky conditions, which are inherent to its nature and can be responsible for musculoskeletal injuries. In addiction, the complexity and the interaction of risk factors, many still not comprehended, that a
Publicado em: 2007
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14. Otimização de estruturas reticuladas planas com comportamento geometricamente não linear / Optimization of plane frame structures with behavior geometrically nonlinear
The aim of this work is to present a formulation and corresponding computational implementation for sizing optimization of plane frames and cable-stayed columns considering geometric non liner behavior. The structural analysis is based on the finite element method using the updated lagrangian approach for plane frame and cable elements, which are represented
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/10/2006
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15. Otimização de seções transversais de concreto armado: aplicação a pórticos planos / Reinforced concrete cross-section cost optimization: a plane frame application
A computational routine developed to optimize the first draft design of reinforced concrete buildings, approximated by plane frames. The commercial softwares used by the engineering offices for structural design is usually based in a first draft design, being this essential stage still accomplished by the engineer´s experience and intuition, using attempt a
Publicado em: 2006
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16. Aplicação da descrição cinemática co-rotacional na análise não-linear geométrica de estruturas discretizadas por elementos finitos de treliças, vigas e cascas / The application of the co-rotational kinematic description to the geometrically non-linear analysis of structures modeled by truss, beam and shell finite elements
The co-rotational formulation was used as the kinematic description to evaluate the geometrically non-linear behavior of different types of structures on a static analysis. Along the current research, it was aimed to demonstrate the basic concepts of the co-rotational approach that is based on the separation of the total motion into rigid body and deformatio
Publicado em: 2006
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17. Automation and integration CAD/CAE on the design of steel structures, using hollow sections / Automação e integração CAD/CAE no projeto de estruturas metalicas, utilizando perfis tubulares
This work has as objective to show a software that have the goal to automate the main stages of a steel structural design, using AutoLISP and Delphi5 languages. The steel structural designs in case are the roofs formed by plane trusses made by hollow sections frames. These hollow steel sections, which are not highly used in plane structures in Brazil, are be
Publicado em: 2006
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18. Técnica de elementos finitos para análise limite de pórticos planos associada à automação do processo de modelagem 3d de estruturas reticuladas via cad
The present work presents a finite element technique for the limit analysis of plane frames using linear programming (LP). The formulation is integrated with a CAD (Computer Aided Design) system developed to automate the modeling of threedimensional and two-dimensional reticular structures. The CAD system developed, named structural modeler, works as pre and
Publicado em: 2006
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19. "Controlabilidade do rolamento de uma esfera sobre uma superfície de revolução" / Controllability of the rolling of a ball over a surface of revolution
This work starts by presenting the classical concepts of rolling (without slipping and without slipping or twisting) of a surface over another one, using the Darboux referential frames of the two surfaces along their contact curves. It shows the equivalence between these concepts with other definitions. In the sequel one studies the controllability in the ro
Publicado em: 2005
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20. Wind pressures in framed structures with semi-rigid connections
In the analysis and design of framed structures, the traditional methods are based on the simplified assumption that the joints are completely either pinned or rigid. However, the experimental investigations show that the frame connections present an intermediate behaviour between these two extreme cases. The present work is concerned with the dynamic elasti
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-06
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21. STATIC AND DYNAMIC INSTABILITY OF PLANE FRAMES WITH SEMI-RIGID CONNECTIONS / INSTABILIDADE ESTÁTICA E DINÂMICA DE PÓRTICOS PLANOS COM LIGAÇÕES SEMI-RÍGIDAS
The main objective of this thesis is to develop a numerical methodology for the nonlinear static and dynamics analysis of plane frames with semi-rigid connections. Initially, the formulations of the adopted finite elements are presented and implemented together with numerical methodologies for the solution of the non-linear equilibrium equations. Then, some
Publicado em: 2004
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22. Analysis and design of reinforced concrete plane frames using a windows based program / Aplicativo windows para análise e dimensionamento de pórticos planos em concreto armado
O objetivo deste trabalho foi desenvolver um programa para auxílio didático em disciplinas que envolvam a análise estrutural, o dimensionamento e o detalhamento de pórticos planos de concreto armado. O programa age como um pós-processador, obtendo dados, como esforços nos nós e deslocamentos nodais de um processador existente, interpreta esses dados e
Publicado em: 2002
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23. Analise de estruturas metalicas reticuladas planas considerando a não-linearidade fisica em sistemas não-conservativos
In this work, analyses of steel plane framed structures, consisting of deformable frames by bending, shear and axial load are presented. In these analyses the effect of material nonlinearity in nonconservative systems are considered. According to the theory of small displacements, a computational program was developed to make possible the determination of th
Publicado em: 2002
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24. Análise não-linear de pórticos planos, considerando os efeitos do cisalhamento no cálculo de esforços e deslocamentos / Non-linear analysis of reinforced concrete plane frames, considering shear effects to compute internal forces and displacements
Segundo modelos teóricos disponíveis na literatura, foi desenvolvido um algoritmo, com a correspondente implementação de um código computacional, baseado no método dos elementos finitos, a ser aplicado a análises não-lineares físicas e geométricas de pórticos planos em concreto armado, nas quais são levadas em consideração as influências da te
Publicado em: 2002