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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.1992.tde-22032024-113318
Document
Author
Full name
Romulo Rastopirquim Ripoli
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1992
Supervisor
Committee
Dias, Carlos Alberto Nunes (President)
Gomes, Edson
Taniguchi, Celio
Title in Portuguese
Estudo de concentração de tensões em estruturas oceânicas: juntas tubulares tipo Y e T
Keywords in Portuguese
Juntas soldadas
Abstract in Portuguese
O presente trabalho desenvolve um estudo de pesquisa sobre juntas tubulares soldadas simples, observando-se inicialmente, de maneira sucinta, breves tópicos sobre a sua classificação, geometria típica, fabricação e utilização. Estes tópicos preliminares, sem a pretensão de esgotar os conhecimentos relacionados com o assunto, servem como informação introdutória para aqueles que tomam um primeiro contato com o estudo de juntas tubulares. Posteriormente, efetua-se uma extensa análise de tensão com mais de 80 modelos de juntas tubulares soldadas, utilizando-se do programa gerador de malhas GERTUBO, desenvolvido exclusivamente para este trabalho, e do mÉtodo dos elementos finitos, atravÉs do programa ANSYS-PC. Obtem-se, assim, uma coleção de formulações paramétricas dedicadas ao cálculo dos FCT's em juntas tubulares soldadas simples dos tipos y e t, cobrindo-se com algum detalhe, determinada gama de juntas tubulares com carcterísticas geométricas bastante comuns na construção offshore. Por fim, são efetuados gráficos comparativos entre as formulações paramétricas aqui obtidas e as de outros autores, dando, também, uma visão geral destas últimas, nas suas faixas de aplicação.
Title in English
Untitled in english
Keywords in English
Welded joints
Abstract in English
This dissertation is a research study about simple welded tubular joints that delas, at first, with brief topics about their classification, typical geometry, production and use. These are only preliminar studies, with no intention to cover all knowledge about the subject: however, they can be of great use as information for those who are getting their very first contact with the study of these types of tubular joints. After that, an extensive stress analysis was performed with more than 80 models of tubular joints, using the net generator GERTUBO, especially developed for this purpose, and also the ANSYS PC program, which is based on the Finite Element Method. By this way, a collection of parametric expressions to calculate the SCFs (Stress Concentrating Factor) of Simple Welded Tubular Joints Y and T were obtained, being these joints very common in the offshore industry. Finally, some graphs comparing the SCFs formulae obtained in this work and others got by different authors are presented, in order to give a general view of those formulae and their range of utilization.
 
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Publishing Date
2024-03-22
 
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