Capacidade remanescente de estruturas tubulares perfuradas de aço sob carregamentos de compressão e flexão

• Ano de defesa: 2019
• Autor(a) principal: Hernández Fontes, Irving David
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Rio de Janeiro; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia; Programa de Pós-Graduação em Engenharia Oceânica; UFRJ
• Palavras-chave em Português: Tubos com dano; Capacidade remanescente; Equação de projeto; CNPQ::ENGENHARIAS::ENGENHARIA NAVAL E OCEANICA
• Link de acesso: http://hdl.handle.net/11422/13656

In this thesis, two numerical-experimental studies are presented to evaluate the remaining compressive and flexural capacity of steel tubular members from offshore units. Perforation damage at half the length is considered as a result from prolonged exposure of the structure to a corrosive environment. Thermal, hydrodynamic or pressure loads are disregarded in this work. A three-dimensional reconstruction procedure, using image sets, has been developed and implemented to consider the initial defects of real samples in numerical models. Parameters such as ratios of transversal and longitudinal slenderness and the perforation magnitude were used to propose design equations for each load scenario. Based on the analysis of variance of the results, the predictions of numerical models and design equations presented a low deviation from the experimental measurements for each type of load.