NDLI: Multiscale fatigue crack growth modelling for welded stiffened panels

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Multiscale fatigue crack growth modelling for welded stiffened panels

Content Provider	Semantic Scholar
Author	Božić, Željko Schmauder, S. Mlikota, Marijo Hummel, Martin
Copyright Year	2014
Abstract	The influence of welding residual stresses in stiffened panels on effective stress intensity factor (SIF) values and fatigue crack growth rate is studied in this paper. Interpretation of relevant effects on different length scales such as dislocation appearance and microstruc- tural crack nucleation and propagation is taken into account using molecular dynamics simulations as well as a Tanaka-Mura approach for the analysis of the problem. Mode I SIFs, KI, were calculated by the finite element method using shell elements and the crack tip displacement extrapolation technique. The total SIF value, Ktot, is derived by a part due to the applied load, Kappl, and by a part due to welding residual stresses, Kres. Fatigue crack propagation simulations based on power law models showed that high tensile residual stresses in the vicinity of a stiffener significantly increase the crack growth rate, which is in good agreement with experimental results.
Starting Page	1043
Ending Page	1054
Page Count	12
File Format	PDF HTM / HTML
DOI	10.1111/ffe.12189
Volume Number	37
Alternate Webpage(s)	http://bib.irb.hr/datoteka/704747.10.1111_ffe.12189.pdf
Alternate Webpage(s)	https://doi.org/10.1111/ffe.12189
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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