Análise viscoelástica e viscoplástica de sólidos bidimensionais pelo método dos elementos de contorno

• Ano de defesa: 2010
• Autor(a) principal: Filipe Emanuel Souza Anacleto
• 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; Engenharia de estruturas
• Link de acesso: http://hdl.handle.net/1843/BUOS-8GDQHF

In the current work two time-dependent boundary element method (BEM) formulations are shown. The first one is developed to an analysis on a viscoelastic media. The Kelvin-Voigt viscoelastic material model is chosen to simulate the timedependent behavior. The second one deals with an analysis on a multi-region viscoplastic media. An elasto/viscoplastic material model is chosen alongside Perzynasflow rule to simulate the time-dependent behavior. A procedure to automatic generate cells in the zones of the domain that yielded is used. To deal with the multiple regions problem, a technique known as stiffness matrix method is used. Examples using both formulations are analyzed and the results are compared with the exact and Finite Element Method (FEM) results.