Documents published in Scipedia

• Análise estática e dinâmica de estruturas de aço e madeira com seções genéricas e inércias variáveis em mísulas de voutes parabólicas

  M. LIMA, P. ROCHA, L. Almeida

  zahra khodadadi personal collection (2022). 8

  
  

  Abstract

  O presente trabalho tem como objetivo realizar análises comparativas (dinâmicas e estáticas) em seções transversais genéricas com inércias variáveis em mísulas parabólicas. Para isso foi desenvolvido um programa computacional em linguagem FORTRAN 90/95 via Método dos Elementos Finitos, sendo seus resultados comparados com resultados encontrados na literatura. Logo, por meio dos resultados de deslocamento, aceleração e velocidade encontrados nas análises, foi possível verificar a influência do carregamento dinâmico no comportamento estrutural de vigas e pórticos. Levou-se em consideração o amortecimento da estrutura, denominado amortecimento proporcional ou de Rayleigh, envolvendo as propriedades do material, que nesta pesquisa foram utilizados o aço e a madeira. Os elementos analisados têm seções transversais genéricas com a inércia variando em mísula parabólica ao longo do seu comprimento, para que possam ser utilizados em projetos arquitetônicos cada vez mais inovadores. Por fim, foi implementada a formulação correspondente ao Elemento Finito Tridimensional, que permite analisar estaticamente a estrutura com o elemento finito hexaédrico com oito nós (H8), elemento finito hexaédrico de vinte nós (H20).

  Abstract
  O presente trabalho tem como objetivo realizar análises comparativas (dinâmicas e estáticas) em seções transversais genéricas com [...]

  • 4
  •  read

• Static and dynamic analysis of steel and wooden structures with generic sections and variable inertia in parabolic vouts corns

  M. LIMA, P. ROCHA

  zahra khodadadi personal collection (2022). 7

  
  

  Abstract

  The present work aims to carry out comparative analyzes (dynamic and static) in generic cross-sections with variable inertias in parabolic corbels. For this, a computational program was developed in the language FORTRAN 90/95 via the Finite Element Method, and its results were compared with those found in the literature. Therefore, through the displacement, acceleration and velocity data found in the analyses, it was possible to verify the influence of dynamic loading on the structural behavior of beams and frames. The damping of the structure, called proportional damping or Rayleigh damping, was taken into account, including the properties of the materials used, which in this research were steel and wood. The analyzed element has generic cross-sections with the inertia varying in parabolic corbel along its length, so that they can be used in increasingly innovative architectural projects. Finally, the formulation corresponding to the Three-Dimensional Finite Element was implemented, which allows the static analysis of the structure with the hexahedral finite element with eight nodes (H8), hexahedral finite element with twenty nodes (H20).

  Abstract
  The present work aims to carry out comparative analyzes (dynamic and static) in generic cross-sections with variable inertias in parabolic corbels. For this, a computational [...]

  • 5
  •  read

• Analysis and design of concrete structures using strut and tie model by FEM: Application in foundation blocks, short consoles, wall beams and rigid shoes

  M. LIMA, P. ROCHA, R. SILVEIRA, K. SILVA

  Rev. int. métodos numér. cálc. diseño ing. (2019). Vol. 35, (2), 30

  
  

  Abstract

  The present work has as main objective to perform elastic-linear analyzes through a computational program with numerical approach of the strut-and-tie model using a formulation based on the Finite Element Method (FEM). In this model, it is possible to analyze the behavior of structural elements such as foundation blocks, wall beams, short consoles, also represent the values ​​ of tensions, deformations and displacements in the region of a beam represented as the Model of cranks developed by MONTOYA et al. [1], besides numerically modeling via FEM a wall beam with a large aperture, developed by SCHLAICH et al. [2]. In order to validate the numerical implementations, the results were compared with numerical modeling performed with the aid of ANSYS software 17 and with normative expressions.

  Abstract
  The present work has as main objective to perform elastic-linear analyzes through a computational program with numerical approach of the strut-and-tie model using a formulation [...]

  • 326
  • 3/5
  •  read