Welding Defect Analysis in Thin-Walled Steel Tube under Bending Moment
The linear elastic problem for two welded thin-walled steel tubes containing circular arc weld defect subjected to bending load is analyzed in the present paper. The welding defect is firstly simplified as a circular arc crack and then the finite element based technique is used to calculate the corresponding energy release rate (J-integral), which is related to stress intensity factor directly. Finally, the arc length of welding defect is changed to investigate the variation of stress intensity factors.
J. F. Geng et al., "Welding Defect Analysis in Thin-Walled Steel Tube under Bending Moment", Applied Mechanics and Materials, Vols. 94-96, pp. 1711-1714, 2011