Comportamento estrutural de tubos circulares de aço inoxidável submetidos a compressão, flexão e flexo-compressão

• Autor(a) principal: Soares, Mário Vitor de Carvalho
• Data de Publicação: 2017
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/11642
• topic: Civil engineering; Stainless Steel; Circular hollow sections; Compression; Combined axial load and bending; Bending; Eurocode; Continuous Strength Method; Engenharia civil; Aço inoxidável; Tubos circulares; compressão; Flexo-compressão; Flexão; Eurocode; Método da Resistência Contínua; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL

The use of stainless steel with applications in structural engineering has been growing over the last few years, mainly due to its characteristics of high corrosion resistance, durability, simple maintenance, fire resistance and, in addition, high aes-thetic appeal and low impact environmental. Currently, structural engineering design standards consider the behavior of stainless steel in a manner similar to the behavior of carbon steel. However, it is known that when this type of equivalence is made, stainless steel is not used in its fullness since such material presents four non-linear stress versus strain curves, with no yield plateau and strain-hardening region well defined. One of the topics that has not yet been completely understood is the behavior of columns, beams-columns and beams composed of stainless steel circular hollow sections (CHS). In this way, the present dissertation aims to study the behavior of these structural elements. Thus, in this study an experimental program was executed and a numerical model was also developed for austenitic stainless steel tubes of section CHS 101,6x1,5, including columns, beam-columns and beams. The numerical models developed in finite elements were calibrated with the experimental program tests. Finally, the results of ten different experimental tests were further compared with the calculation methods recommended by Eurocode 3 Part 1-4 and the Continuous Resistance Method, which has not yet been integrated into the European standard up to the present time. It came to the conclusion that Eurocode 3 Part 1-4 is conservative, especially when compared to the Continuous Resistance Method, for the present study.