Numerical Simulation of the Welding Process during the Main Circulation Pump Impeller Repair

Milan Baláž

doi:10.4028/p-qz576t

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Numerical Simulation of the Welding Process during the Main Circulation Pump Impeller Repair
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Numerical Simulation of the Welding Process during the Main Circulation Pump Impeller Repair

Abstract:

Paper presents a numerical simulation of the main circulation pump impeller damaged parts repair/replacement welding process, for the prediction of welding-induced residual stresses. 3D numerical model creation of the impeller flange and central hub welded joints. Thermal and stress-strain analysis of assessed parts using the finite element method. Calculation of equivalent residual stresses in the area of examined welded joints. Applicability of results in further impeller integrity analyzes. The results confirmed the suitability of the chosen welding procedure and technology.