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Quantification of the influence of vertex singularities on fatigue crack
- 1.0092859 - ÚFM 2008 FR eng A - Abstract
Hutař, Pavel - Náhlík, Luboš - Knésl, Zdeněk - Šestáková, Lucie
Quantification of the influence of vertex singularities on fatigue crack.
17th International Workshop on Computational Mechanics of Materials. Vol. 17th. Paris: Centre des Maériaux, 2007. s. 139-139.
[IWCMM17. 22.08.2007-24.08.2007, Paris]
R&D Projects: GA ČR GP106/06/P239; GA ČR(CZ) GA101/05/0320
Institutional research plan: CEZ:AV0Z20410507
Keywords : vertex singularity * generalized stress intensity factor * stress singularity * fatigue crack * V-notch
Subject RIV: JL - Materials Fatigue, Friction Mechanics
The effect of vertex singularity on fatigue crack behaviour is presented in the article. The methodology based on generalized stress intensity factor and model of Vnotch is used for reliable estimation of the fatigue crack growth rate in the area close to the free surface, where the effect of the vertex singularity is dominant. It is shown that decrease of the crack singularity exponent close to the vertex point leads to a decrease in the fatigue crack growth rate and contributes to a typical curved crack front observed experimentally for through crack.
Permanent Link: http://hdl.handle.net/11104/0153066
Number of the records: 1