0435433 - ÚFM 2015 RIV GB eng C - Conference Paper (international conference)
Stratil, Luděk - Šiška, Filip - Hadraba, Hynek - Dlouhý, IvoModeling of ductile tearing for RAFM steel Eurofer97.
20th European Conference on Fracture. Amsterdam: Elsevier, 2014 - (Zhang, Z.), s. 1155-1160. ISSN 2211-8128.
[European Conference on Fracture /20./. Trondheim (NO), 30.06.2014-04.07.2014]
R&D Projects: GA MŠMT EE2.3.20.0197; GA MŠMT(CZ) ED1.1.00/02.0068
Institutional support: RVO:68081723
Keywords : Eurofer97 * ductile fracture * J-R curve * KLST specimen * GTN model
Subject RIV: JL - Materials Fatigue, Friction Mechanics
The contribution describes experiments and numerical modelling performed to deal with ductile tearing for RAFM steel Eurofer97. Based on results of tensile testing and results of FEA a micromechanical model of ductile fracture Gurson-Tvergaard-Needleman (GTN) was calibrated. This model was then applied for simulation of measured J-R curve. To successfully simulate J-R curve by GTN model, crack length increment was separated into increment created by crack tip blunting (stretch width zone increment) and by ductile tearing itself. J-R curve corrected to crack tip blunting was satisfactory described by GTN model choosing suitable element size in the region of crack propagation.
Permanent Link: http://hdl.handle.net/11104/0240030
