Modelado numérico del socavado lateral en procesos de soldadura

摘要: When welded joints have to meet particular requirements related fatigue life they are usually designed using the so called S-N design curves. This implies construction of a curve for each design. From point view user, it is often difficult establish accurately which that better fits being considered. The " local approach based on concept strenght essentially determined by stress and strain in hot spots ". These located geometric discontinuities joint. Through this possible consider possibility constructing only one or key ", given material. In case parameter instead nominal stress. present work lateral defect modeled with fillet welds combined finite elements method. A data base Kt different dimensionless relations generated, from these results an analytical function value concentrator interpolated. Finally contour plots were generated help reducing number laboratory tests needed determination Kt.