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- Title
Modeling of fusion zone in FE analysis of the welding process.
- Authors
Safari, A. R.; Forouzan, M. R.; Shamanian, M.
- Abstract
Element birth, nodal birth and strain relaxation techniques are of the main methods in modeling of fusion zone in FE analysis of welding residual stresses. In this study, based on the two latter methods, a combined method is developed by introducing a thermo-elastic-plastic constitutive model. For each weld pass, heat up portion and all temperatures above an elevated temperature called softening temperature (TSOFT) are truncated to TSOFT that is similar to nodal birth method. For successive structural analysis, a thermo-elastic-plastic constitutive model is developed in which at TSOFT, elastic-plastic strains and stresses are set to zero which is compatible with relaxation effect of molten pool. Therefore, the recent method combines the effect of other methods. Results show that although all methods have identical results for residual stresses but for residual strains and displacements, the results of the developed method differ considerably.
- Publication
Journal of Advanced Research in Mechanical Engineering, 2011, Vol 2, Issue 1, p18
- ISSN
1737-9318
- Publication type
Academic Journal