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Simulation of fatigue crack growth by crack tip blunting
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SYSNO ASEP 0044942 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Simulation of fatigue crack growth by crack tip blunting Title Simulace šíření únavových trhlin vlivem plasticity Author(s) Hutař, Pavel (UFM-A) RID, ORCID
Sauzay, M. (FR)Source Title Fracture of Nano and Engineering Materials and Structures : proceedings. - Dordrecht : Springer, 2006 / Gdoutos E.E. - ISBN 1-4020-4971-4 Pages s. 1-8 Number of pages 8 s. Publication form CD - CD Action European Conference of Fracture /16./ Event date 03.07.2006-07.07.2006 VEvent location Alexandroupolis Country GR - Greece Event type WRD Language eng - English Country NL - Netherlands Keywords plastic blunting ; fatigue crack Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GP106/06/P239 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation A study of fatigue crack growth due to blunting and re-sharpening of a crack tip is proposed in this article. The numerical modeling is based on elastic-plastic finite element analysis using the CASTEM code. On the model of the long cracks, in a semi-infinite plate, the possibility of reasonable prediction of fatigue crack growth due to crack tip blunting mechanism was studied. A parametric study of the influence of the yield stress of material on fatigue crack growth was made. The crack propagation rate was found to be proportional to the amplitude of the crack tip opening displacement in the usual range of the stress intensity factor (corresponding to small scale yielding conditions). Two different experimentally obtained sets of fatigue crack growth data (316LN and P91 steel) were used for comparison with the numerical predictions. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2007
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