کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
767093 | 1463111 | 2014 | 18 صفحه PDF | دانلود رایگان |

• The peak stress method enables one to readily estimate the Notch Stress Intensity Factors (NSIFs).
• The peak stress method has been used with three-dimensional (3D) finite element (FE) analyses.
• Approximate and exact values of the mode I NSIF have been compared successfully.
• The peak stress method can be used to assess the fatigue strength of fillet-welded using 3D FE analyses.
The peak stress method is a simplified, FE-based technique to estimate the mode I and mode II Notch Stress Intensity Factors (NSIFs) at the tip of sharp V-notches or cracks. Then it is useful to readily assess the fatigue strength of fillet-welded joints failing from the weld toe or the weld root according to the local approach based on the NSIFs. Originally based on two-dimensional FE models, the PSM is extended here to be used with three-dimensional FE models, which are increasingly adopted in practical applications. Exact and approximate values of the mode I NSIF at the toe of cruciform and T butt- or fillet-welded tubular joints are calculated and compared successfully.
Journal: Engineering Fracture Mechanics - Volume 115, January 2014, Pages 154–171