Análise da estampagem de chapas metálicas utilizando elementos finitos

Pós-graduação em Engenharia Mecânica - FEG

Um modelo constitutivo de dano composto para simular o comportamento de materiais quase-frágeis

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Comparação de modelos de custo dos produtos gerados em uma central de cogeração

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Projeto de controladores baseados em LMIs: realimentação derivativa e sistemas chaveados utilizando estrutura variável

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Escalonamento de tarefas em sistemas distribuídos baseado no conceito de propriedade distribuída

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação de núcleo metálico fundido, núcleo com fibra de vidro e endocrown em cerâmica: análise comparativa pelo método dos elementos finitos

Pós-graduação em Ciências Odontológicas - FOAR

Da inteligibilidade humana acerca da organização espacial na natureza ou da geografia: realismo, racionalismo crítico e sistemas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência do formato do rebordo na associação de uma prótese parcial removível de extremidade livre mandibular associada ao implante com sistema de retenção ERA, pelo método dos elementos finitos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Gestão escolar no estado de São Paulo: perspectiva democrática ou modelo gerencial? uma análise a partir do relatório dos estudos do SARESP (2010 a 2012)

Pós-graduação em Educação - FFC

Analysis of the Stresses in Corrugated Sheets under Bending

This paper presents three different numerical models for the evaluation of the stresses in corrugated sheets under bending. Regarding the numerical simulations different approaches can be considered, i.e., a elastic linear analysis or a physical nonlinear analysis, that considers criteria to fail for the sheet material. Moreover, the construction of the finite element mesh can be used shell elements or solid elements. The choice of each finite element must be made from the consideration of their representativity before behavior to be simulated. Thus, the numerical modelling in this manuscript was performed from the three-dimensional models using the SAP2000Nonlinear software, version 7.42, which has as base the finite elements method (FEM). It was considered shell elements in the build the mesh of finite elements and an analysis of type elastic linear in this case. Five mm thick sheets were evaluated considering three different longitudinal dimensions (spans), i.e., 1100 mm, 1530 mm and 1830 mm. The applied load to the models was 2500 N/m and it was verified that the spans of support of sheets have a significant influence on the results of stresses. The sheets with larger spans present larger stresses for the same applied load. The most intense values of tension occur in the troughs (low waves) of the sheets, on the lower surface, while the most intense values of compression occur in the crests (high waves), on the upper surface of the sheet. The flanks, which are the parts among the troughs and crests of the sheets, are submitted to low levels of stresses. The numeric results of the stresses showed a good agreement with the results obtained from other researchers(3) and these results can be used to predict the behavior of corrugated sheets under bending.

A local-global scheme for tracking crack path in three-dimensional solids

This paper aims to contribute to the three-dimensional generalization of numerical prediction of crack propagation through the formulation of finite elements with embedded discontinuities. The analysis of crack propagation in two-dimensional problems yields lines of discontinuity that can be tracked in a relatively simple way through the sequential construction of straight line segments oriented according to the direction of failure within each finite element in the solid. In three-dimensional analysis, the construction of the discontinuity path is more complex because it requires the creation of plane surfaces within each element, which must be continuous between the elements. In the method proposed by Chaves (2003) the crack is determined by solving a problem analogous to the heat conduction problem, established from local failure orientations, based on the stress state of the mechanical problem. To minimize the computational effort, in this paper a new strategy is proposed whereby the analysis for tracking the discontinuity path is restricted to the domain formed by some elements near the crack surface that develops along the loading process. The proposed methodology is validated by performing three-dimensional analyses of basic problems of experimental fractures and comparing their results with those reported in the literature.

Avaliação do tipo de carregamento, pela análise de elementos finitos, sobre a resistência de união ao cisalhamento da interface metal/porcelana (Ni-Cr/vita omega 900)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da distribuição das tensões internas, pelo método dos elementos finitos, em uma raiz com um retentor intra-radicular pré-fabricado, rosqueado e com fenda apical

Pós-graduação em Odontologia Restauradora - ICT

Otimização dinâmica de rotores com eixos em compósito

Pós-graduação em Engenharia Mecânica - FEG