Wspólnotowy Serwis Informacyjny Badan i Rozwoju - CORDIS

Innovative modelling of friction stir welding

FSW computational model is implemented both via analytical and numerical analysis.
The resulting models allow relating operational welding parameters and tool geometry with fundamental aspects about the process, e.g., thermal history, residual stresses, and energy and mechanical efficiency.

- Thermal analytical model
-- Current Status: Completed

-- Main Potential: To establish correlations between the most relevant FSW parameters and the thermal efficiency of the process based on experimental analysis integrated with an analytical model of the thermal field resulting from the FSW, properly validated and where several specificities of the process FSW are included.

- Integrated numerical Thermal-Viscous and Thermal-Structural models
-- Current Status: Completed

-- Envisaged Potential: To know the fundamental mechanisms of the join formation phenomena and thus to be able to develop process parameters, e.g., tool geometry, to improve weld quality and productivity. The model is the result of a rational integration of two commercial numerical softwares, which allow the Computational Fluid Dynamics (FLUENT) analysis in the vicinity of the tool (shoulder and pin), and the Computational Structural Mechanics (ABAQUS) analysis in the non-viscous deformation volume. This model will supply information about the mechanical reactions on the tool resulting from the process and thus contribute for the process guidelines.

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