Analysis of Plastic Flow during Friction Stir Spot Welding Using Finite Element Modelling

Zeng Gao; Friedrich Krumphals; Pavel Sherstnev; Norbert Enzinger; Ji Tai Niu; Christof Sommitsch

doi:10.4028/www.scientific.net/KEM.504-506.419

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 504-506Analysis of Plastic Flow during Friction Stir Spot...

Analysis of Plastic Flow during Friction Stir Spot Welding Using Finite Element Modelling

Abstract:

Friction stir spot welding (FSSW) as a variant of the linear friction stir welding is implemented in automotive industry as a partial replacement of resistance spot welding for aluminium. FSSW as a solid state joining technology, primarily takes advantage of severe thermoplastic deformation, to achieve the joining between two parts, which can be from the same material or even dissimilar. In this paper, the coupled thermo-mechanical viscoplastic finite element formulation is presented based on the character of FSSW. The model was calibrated by comparing temperature history obtained from the simulation with experimental data and subsequently used to investigate the effective strain distribution in the weld zone as well as the material flow and the shape of the stir zone.

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Periodical:

Key Engineering Materials (Volumes 504-506)

Pages:

419-424

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.504-506.419

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Online since:

February 2012

Authors:

Zeng Gao, Friedrich Krumphals, Pavel Sherstnev, Norbert Enzinger, Ji Tai Niu, Christof Sommitsch

Keywords:

Finite Element Method (FEM), Friction Stir Spot Welding, Plastic Flow, Temperature Field

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