Interpretation of Overload Effects Under Spectrum Loading of Welded High-Strength Steel Joints
作者： Cetin Morris Sonsino , Heinz Kau Fmann , Rainer Wagener , Christian Fischer , Jens Eufinger
DOI: 10.1007/BF03321544
关键词:
摘要: Within the structural durability evaluation of welded structures under spectrum loading, influence overloads on fatigue life due to special events during service must also be considered. For this, butt welds and transverse stiffeners manufactured from steel grades S355N/M, 690Q 960Q were submitted Gaussian spectra without with superimposed overload spectra. The harmed only low-strength joints pulsating bending. In all other cases investigated, low-, medium- high-strength steels fully reversed loadings, a significant decrease was not observed; contrary, increase could even observed. This behaviour is explained by modelling notch stresses strains in weld toes appertaining cyclic elastic-plastic material law considering local residual stresses. comprised crack propagation behaviour. Not initiation but increased
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