Fatigue assessment of welded thin sheets with the notch stress approach - Proposal for recommendations

被引：21
|
作者：
Baumgartner, Joerg [1 ]
Hobbacher, Adolf F. [2 ]
Rennert, Roland [3 ]
机构：
[1] Fraunhofer Inst Struct Durabil & Syst Reliabil LB, Darmstadt, Germany
[2] Jade Hsch, Wilhelmshaven, Germany
[3] IMA Mat Forsch & Anwendungstech GmbH, Dresden, Germany
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2020年 / 140卷 / 140期
关键词：
Welded joints; Fatigue assessment; Notch stress approach; Reference radii; Slope and knee point; JOINTS; STRENGTH; DESIGN; COMPONENTS; THICKNESS; ALLOY; RADII;
D O I：
10.1016/j.ijfatigue.2020.105844
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The fatigue behavior and assessment of welded thin joints shows some special characteristics compared to thick joints. The slope of the S-N curve is shallower and the assessment has to be performed with smaller reference radii, if notch stresses are used. Up to now, many publications are available that address one or the other issue. However, a complete assessment strategy is lacking. In this paper, the main results from the literature are gathered, further evaluations are performed and two assessment approaches are described. The notch stress approach using reference radii and the effective stress approach. For both, FAT-classes are recommended.
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页数：14
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