In order to verify the applicability of the notched stress method to the fatigue assessment of sheet welded joints with plate thickness of less than 5 mm,the fatigue performance test of Q345qD sheet welded joints was carried out,obtaining the fatigue test data,and combined with the notched stress concentration coefficient of welded joints calculated by finite element analysis,the notched stress fatigue life curve was drawn,thereby determining the slope value and fatigue grade value of the fatigue curve of sheet welded joints.Compared with the existing research results,it's found that the Q345q...
