Fatigue assessment of a welded automotive differential under multiaxial and variable amplitude loading

被引：4
|
作者：
Baumgartner, Joerg [1 ]
Waterkotte, Ralf [2 ]
Hesseler, Jan [1 ]
机构：
[1] Fraunhofer Inst Struct Durabil & Syst Reliabil, Fraunhofer LBF, Darmstadt, Germany
[2] Schaeffler Technol AG & Co KG, Herzogenaurach, Germany
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 149卷
关键词：
Welded joints; Fatigue assessment; Notch stress approach; Non-proportional loading; Damage accumulation; JOINTS; DESIGN;
D O I：
10.1016/j.ijfatigue.2021.106292
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The fatigue assessment of two weld seams in a differential is performed based on notch stresses at the weld root with a reference radius of rref = 0.05mm. During one revolution of the differential local shear and normal stresses change non-proportionally. For the assessment, a load spectrum that approximates the service loads is considered. The local multiaxial loading conditions are assessed with the modified Gough-Pollard hypothesis using a comparison value of CV = 0.5 and the variable amplitude loading is assessed with a linear damage accumulation. The assessment results are compared to the outcome of a validation test with the component.
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页数：8
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