Análise de distribuição de temperaturas e tensões residuais em soldas do tipo ring-weld. / Analysis of the temperature and residual stress fields in ring-welds.

AUTOR(ES)

Pablo Filgueira Rodeiro

DATA DE PUBLICAÇÃO

2003

RESUMO

This study presents an approach to determine the temperature field and residual stresses developed during the welding of a ring-weld. Due to the complexity of the welded joint and its deposition speed, a 3D solid finite element model was constructed for solving the temperature and residual stress fields. The non-linear characteristics of the phenomenon such as, the temperature dependence of the physical properties and the material deposition through the welding process were taken into account. A thermocouple test was performed in order to compare and validate the thermal model used. The results obtained have shown a good correlation between the test and numerical model results, allowing a greater reliability to the execution of the subsequent mechanical model. The results of the mechanical model used for determining the residual stresses were not verified by testing, but the results were qualitatively adequate.

ASSUNTO(S)

tensão residual temperature soldagem temperatura stainless steel residual stress welding aço inox

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