A post-processor for fatigue crack growth analysis based on a finite element stress field

In this paper the algorithm needed for performing a crack growth analysis of a three-dimensional component by post-processing results from a standard finite element stress analysis is given. Weight functions are used for calculating the stress intensity factor for an embedded crack and a surface cra...

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Veröffentlicht in:	Computer methods in applied mechanics and engineering 2008-01, Vol.197 (6-8), p.834-845
Hauptverfasser:	Wormsen, A., Fjeldstad, A., Härkegård, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Computational techniques Defect size distribution Exact sciences and technology Fatigue crack growth Finite element analysis Fracture mechanics (crack, fatigue, damage...) Fundamental areas of phenomenology (including applications) Mathematical methods in physics Physics Probability of component fatigue failure Solid mechanics Structural and continuum mechanics Weight function
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Beschreibung
Zusammenfassung:	In this paper the algorithm needed for performing a crack growth analysis of a three-dimensional component by post-processing results from a standard finite element stress analysis is given. Weight functions are used for calculating the stress intensity factor for an embedded crack and a surface crack. Defects are generated in several nominally equal components, and crack growth calculations are carried out by using a short crack model to determine the probability of component fatigue failure. The algorithm has been implemented in a finite element post-processor.
ISSN:	0045-7825 1879-2138
DOI:	10.1016/j.cma.2007.09.012