Fat classes of welded steel details derived from the master design curve of the peak stress method

Abstract In this paper, the peak stress method (PSM) is adopted to analyse fatigue strength of steel welded joints. According method, a single design curve expressed in terms properly defined equivalent and it valid for arc-welded Private companies often need simple finite element beam models assessments, because large dimensions structures. However, elements provide nominal stresses (and not local stresses) that must be compared with appropriate values (the FAT classes) available standards. Due limited number classes available, finding one frequently troublesome, particularly when complex geometries are considered. The objective work define geometrically structural details, starting from PSM. have also been determined using hot spot approach. Then results obtained two methods compared. details analysed present paper typically amusement park structures classified common