Análise da influência de elementos de vedação na rigidez de juntas parafusadas em tração utilizando o software Excel

• Autor(a) principal: Rodrigues Neto, Joaquim Borges [UNESP]
• Data de Publicação: 2018
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203067; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2019-10-22/000918636.pdf
• topic: Ligações parafusadas; Dureza; Gaxetas; Vedação (Tecnologia); Bolted joints

Some applications of bolted joints require that there is no possibility of loosening and subsequent leakage, such as pressure vessels and pipes containing toxic or hazardous materials. For this type of application, gaskets are usually used between the two surfaces of the bolted joint material. A gasket is nothing more than a sealing element, usually polymeric. Because of the introduction of a different element, it is necessary to evaluate the constructive parameters of the joint, such as safety coefficients and stiffness factor. In this work, four methods for calculating joint stiffness are analyzed through a Microsoft Excel spreadsheet. In addition, the influence of the thickness of the gasket and of the bolt diameter on the stiffness verified the behavior of a joint with respect to its safety coefficients is analyzed. Finally, the behavior of a joint in relation to its safety coefficients is verified. The calculations of the methods show that it is possible to apply all of them, being the choice of the best based on the preference of the designer, and that the use of a gasket really allows to have higher coefficients of security against separation and is therefore recommended in situations where the leakage is intolerable