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Numerical and databased investigations on the fatigue of cruciform joints with gaps
Abstract The paper deals with investigations on the fatigue resistance of the load-carrying cruciform joint with gaps. The aim is to define limits of specific acceptable imperfections, since these do not always necessarily affect the fatigue strength. Different geometrical influences on the fatigue strength of the load-carrying cruciform joint with gaps are analysed numerically. Numerical simulations comprise effective notch stress calculations, which have been compared to fatigue test results from literature, documented in a fatigue test database. A larger gap in combination with a smaller weld size leads to the unfavourable failure at the weld root. For the specific geometrical configurations, borderline functions defining the failure location on the basis of local weld geometry have been defined. Finally, the most interesting configurations are presented, which will be tested experimentally in a subsequent fatigue test program.
Graphical abstract Display Omitted
Highlights Collecting an extensive data base on fatigue tests of cruciform joints. Gathering relevant literature on fatigue details with weld imperfections. Presentation of a comparison of experimental and numerical fatigue test results. Numerically investigating the failure location depending on weld geometry. Defining limit curves for failure location for future experimental validation.
Numerical and databased investigations on the fatigue of cruciform joints with gaps
Abstract The paper deals with investigations on the fatigue resistance of the load-carrying cruciform joint with gaps. The aim is to define limits of specific acceptable imperfections, since these do not always necessarily affect the fatigue strength. Different geometrical influences on the fatigue strength of the load-carrying cruciform joint with gaps are analysed numerically. Numerical simulations comprise effective notch stress calculations, which have been compared to fatigue test results from literature, documented in a fatigue test database. A larger gap in combination with a smaller weld size leads to the unfavourable failure at the weld root. For the specific geometrical configurations, borderline functions defining the failure location on the basis of local weld geometry have been defined. Finally, the most interesting configurations are presented, which will be tested experimentally in a subsequent fatigue test program.
Graphical abstract Display Omitted
Highlights Collecting an extensive data base on fatigue tests of cruciform joints. Gathering relevant literature on fatigue details with weld imperfections. Presentation of a comparison of experimental and numerical fatigue test results. Numerically investigating the failure location depending on weld geometry. Defining limit curves for failure location for future experimental validation.
Numerical and databased investigations on the fatigue of cruciform joints with gaps
Bartsch, Helen (author) / Feldmann, Markus (author)
2021-07-03
Article (Journal)
Electronic Resource
English
Investigations on cruciform welded joints with root gaps
| TIBKAT | 1980
Low cycle fatigue strength assessment of cruciform welded joints
| Online Contents | 1998
Numerical analysis on fatigue failure modes in load-carrying fillet welded cruciform joints
| British Library Conference Proceedings | 2001