Modelo de dano ortotrópico não local aplicado à regularização de resultados na análise fisicamente não linear

• Ano de defesa: 2016
• Autor(a) principal: Pedro Lucio Ferreira Brasil de Souza
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Engenharia de estruturas; Concreto armado; Método dos elementos finitos
• Link de acesso: http://hdl.handle.net/1843/BUOS-AUXLSS

This work presents a study about constitutive modelels of orthotropic damage, applied from a non-local formulation, for solve physically nonlinear problems, on concrete structures. There will done a study on the analysis of physically nonlinear concrete structures and the strain location numerically induced phenomenon, showing that this can lead the analyses to unrepresentative results. To solve this phenomenon, regularizations mechanisms are needed, and from that, non local models are presented, with the objective to minimize the numerical problems that arise with the non-linear analysis. The study is consolidated by numerical simulations that compares results of problems solved with the analysis by local orthotropic damage models and nonlocal orthotropic damage models. For this analyses will be used the software Insane(Interactive Structural Analysis Environment) that has local and nonlocal models already implemented. With these simulations, the limitations of local models can be observed as well as improvements in the results provided by the use of non local models. Besides the comparison models, simulations will be performed to compare the numerical analysis by nonlocal models with experimental results.