AnÃlise de fadiga em juntas soldadas pelo processo MIG/LASER utilizando o mÃtodo dos elementos finitos / Fatigue Analysis of MIG/Laser Welded Joints with the Finite Element Method

AUTOR(ES)

Josà DÃsio de Lira JÃnior

DATA DE PUBLICAÇÃO

2006

RESUMO

The objective of this work is to deal with the analysis of MIG/Laser welded joints. The analysis method chosen is the Master S-N Curve Method, which is based on fracture mechanics principles and uses finite element results as inputs. This method was chosen due to the fact that it has been adopted by American Society of Mechanical Engineers (ASME) for development of the steel MIG damage model. First, a general review of the literature related to fatigue of metals is done. Then, the characteristics of Master S-N Curve Method are shown followed by a specific chapter about geometric finite element modeling techniques of welded joints. Lap and T joints are studied and simulated. The numerical results are compared with literature results for those kinds of joints. Mesh convergence studies are then performed. An industrial practical application of this method is shown in a specific section

ASSUNTO(S)

welded joints mÃtodo dos elementos finitos juntas soldadas fadiga mecÃnica finite element method fatigue mechanics engenharia mecanica

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