The influence of process parameters on the residual asymptotic stress distribution is investigated using a 3D numerical modeling of the welding process. Computational welding mechanics and the peak stress method are combined to calculate the residual Notch Stress Intensity Factors (R-NSIF) as a function of power input. Results are summarized in terms of heat input and discussed in view of a future guidelines proposal addressed to designers who are going to face a welding process optimization for fatigue life improvement.
The influence of welding heat input on Residual Notch Stress Intensity Factor
Ferro P.
Conceptualization
;
2022
Abstract
The influence of process parameters on the residual asymptotic stress distribution is investigated using a 3D numerical modeling of the welding process. Computational welding mechanics and the peak stress method are combined to calculate the residual Notch Stress Intensity Factors (R-NSIF) as a function of power input. Results are summarized in terms of heat input and discussed in view of a future guidelines proposal addressed to designers who are going to face a welding process optimization for fatigue life improvement.
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