Simulação numérica do comportamento pós-fissuração de vigas de concreto armado pelo método dos elementos finitos

• Ano de defesa: 2007
• Autor(a) principal: Radi Neto, José
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; BR; Programa de Pós-graduação em Engenharia Civil; Engenharias; UFU
• Palavras-chave em Português: Concreto armado; Seção efetiva; Fissuração; Elementos finitos; Deslocamentos; Reinforced concrete; Effective cross section; Cracking; Finite elements; Displacements; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: https://repositorio.ufu.br/handle/123456789/14224

This work presents a numerical method for the evaluation of internal forces and displacements in reinforced concrete straight beams considering cracking and the influence of longitudinal and transversal reinforcement. In order to simulate cracking behavior, the elasticity module of the cracked element is reduced depending on the dimensions of the finite element. The physical non-linear behavior of concrete and steel is also considered. The finite element method was used for a rectangular element with four nodes representing the concrete. A hinged end bar element in tension and compression was used for steel. The numerical results obtained compared satisfactorily with the experimental ones available in the technical literature. The results were analyzed by graphs and tables. The analysis showed the proposed method is actually appropriate for reinforced concrete beams simulations.