Um esquema eficiente para a análise dinâmica transiente com o método dos elementos de contorno

• Ano de defesa: 1989
• Autor(a) principal: Silva Junior, Waldyr de Lima e
• Tipo de documento: Dissertação
• 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 Civil; UFRJ
• Palavras-chave em Português: Engenharia Civil; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: http://hdl.handle.net/11422/3933

This work concerns the optimization of the time marching scheme commonly used to obtain numerical Boundary Element Method solutions for two-dimensional transient problems governed by the Scalar Wave Equation. Two truncating schemes are proposed, named Intermediate and Mixed, which permit control over errors originated from truncation, being therefore possible to keep such errors at an acceptable level for engineering purposes. Storage area and CPU time economy are remarkable, making the procedure developed worthwile to be implemented. Comparison of results obtained employing the aforementioned truncating schemes with those obtained from the non-truncated version was made for three numerical examples, and confirmed the efficiency of the formulation.