TIG‐dressing is a post‐welding operation consisting in the remelting of the weld toe region aimed to promote a reduc-tion of the stress concentrati on effect in that zone by an induced smoother transition bet ween the plate and the weldcrown. Furthermore, a residual stress redistribution is expected that contributes to enhance the fatigue strength of thewelded joint. Unfortunately, these effects are very difficult to be quantified by numerical simulation since a highlycoupled thermo‐fluid‐mechanical analysis is required. In this scenario, a simplified numerical model of theTIG‐dressing process is proposed that overcomes the necessity to use a coupled thermo‐fluid‐mechanical analysis.

An efficient model for the TIG‐dressing process numerical simulation.

P. Ferro
;
2019

Abstract

TIG‐dressing is a post‐welding operation consisting in the remelting of the weld toe region aimed to promote a reduc-tion of the stress concentrati on effect in that zone by an induced smoother transition bet ween the plate and the weldcrown. Furthermore, a residual stress redistribution is expected that contributes to enhance the fatigue strength of thewelded joint. Unfortunately, these effects are very difficult to be quantified by numerical simulation since a highlycoupled thermo‐fluid‐mechanical analysis is required. In this scenario, a simplified numerical model of theTIG‐dressing process is proposed that overcomes the necessity to use a coupled thermo‐fluid‐mechanical analysis.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3388829
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