Abstract：In this paper, fatigue stress at welded toes of welded joints is analyzed ,which is under bending and tortion loading. Stress state on critical plane at welded toes is studied with structural stress under in-phase and out-of-phase loading; Multiaxial fatigue life prediction method of welded joints was built based on structural stress and modified Wohler curve mothod;Some tube-to-plate welded joints under multiaxial loading was estimated using the proposed method, the results were compared with fatigue test data from related literature,
The proposed method give the best results compared with some multiaxial fatigue prediction methods including Eurocode3 and the method have a good mesh-size insensitive characteristics.
2010, Vol. 31 
