Ambiente teórico-computacional unificado para modelos constitutivos: inclusão de modelo elastoplástico com dano

• Ano de defesa: 2013
• Autor(a) principal: Anelize Borges Monteiro
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Análise não linear; Método dos elementos finitos; Modelagem constitutiva; Engenharia de estruturas; Modelos matematicos
• Link de acesso: http://hdl.handle.net/1843/PASA-9BNHH4

The formulation of constitutive models combined with computational mechanics is a recurrent theme in several researches and it has encouraged the investigation of material nonlinear responses and their inuences on structural behavior. In this context, this work investigates an elastoplastic damage model. To achieve this, the INSANE (INteractive Structural ANalysis Environment), whose numerical core contains the Unified Theoretical and Computational Environment to ConstitutiveModels proposal by Penna (2011), has been used. The Elastoplastic Damage Model of Lemaitre (1985a,b) has been incorporated on it and three hardening or softening laws have been considered. The software project of this inclusion was efficient and generic, making possible to implement different evolution functions of the inelastic modulus. Numerical simulations allowed evaluating the adjustment of the materialparameters, the numerical stability of the model as well as validating it through the reproduction of examples, comparing the obtained results with the ones available in the literature.