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|Type:||Artigo de evento|
|Title:||Cfd Modeling Of Dissimilar Aluminum-steel Friction Stir Welds|
|Abstract:||Material flow in friction stir welding is an important aspect of the process since it can provide valuable information about the material mixture and allows tool design and process parameters improvement. In this work, a computational fluid dynamics model of an aluminum-steel dissimilar butt weld was implemented using the Finite Element (FE) software Comsol v4.3. The model assumes a viscoplastic material behavior and it was calibrated using temperature measurements for two different tool offsets (+0.5 and +1.5 mm) with respect to the joint line. The model can reproduce the maximum measured temperatures and heat imput, but the cooling rates are higher than the experimental ones. The simulated material flow is laminar and it is dependent on the tool geometry. The model can also provide information on the principal mechanism of heat generation for each material: friction in the steel and plastic deformation in the aluminum. Copyright © ASM International® All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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