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Type: Artigo de periódico
Title: Analytical modeling of multipass welding process with distributed heat source
Author: Fassani, R. N. S.
Trevisan, O. V.
Abstract: In the welding process, the most interesting regions for heat transfer analysis are the fusion zone (FZ) and the heat affected zone (HAZ), where high temperatures are reached. These high temperature levels cause phase transformations and alterations in the mechanical properties of the welded metal. The calculations to estimate the temperature distribution in multiple pass welding is more complex than in the single pass processes, due to superimposed thermal effects of one pass over the previous passes. In the present work, a comparison is made between thermal cycles obtained from analytical models regarding point (concentrated) and Gaussian (distributed) heat sources. The use of distributed heat source prevents infinite temperatures values near the fusion zone. The comparison shows that the thermal cycles obtained from the distributed heat source model are more reliable than those obtained from the concentrated heat source model.
Subject: Distributed source
analytical modeling
multipass welding
Editor: Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM
Rights: aberto
Identifier DOI: 10.1590/S1678-58782003000300013
Date Issue: 1-Sep-2003
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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