The Fatigue Strength of Fillet Welded Connections
نویسنده
چکیده
This report describes a study of the fatigue behavior of fillet welded joints stressed perpendicular to the weld line. The study included an experimental phase in which the stiess-life and cracking behavior of load and nonload carrying fillet weld joints was determined. This experimental study concentrated on the fatigue behavior in the transition region between high and low cycle fatigue 3 5 (10 cycles to 10 cycles of load application). The second phase of the study was the determination of the fracture mechanics stress intensity factor for cracks at the weld toe or root of fillet welded joints. The finite element technique was used to determine the compliance of typical fillet welded joints. The results of this analysis showed that the stress intensity factor was a function of weld size, weld angle, plate thickness and weld penetration. Relationships to estimate the stress intensity factor were developed. The third phase of the study was the correlation of the experimental fatigue stress-life behavior of fillet welded joints with the predicted behavior using the concepts
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