Stress state analysis of sub-sized pre-cracked three-point-bend specimen

0370099 - ÚFM 2012 RIV CZ eng K - Konferenční příspěvek (tuzemská konf.)
Stratil, Luděk - Kozák, Vladislav - Hadraba, Hynek - Dlouhý, Ivo
Stress state analysis of sub-sized pre-cracked three-point-bend specimen.
Applied Mechanics 2011 - Conference Proceedings. Brno: Ústav fyziky materiálů, AV ČR, v.v.i, 2011 - (Náhlík, L.; Zouhar, M.; Ševčík, M.; Seitl, S.; Majer, Z.), s. 203-206. ISBN 978-80-87434-03-1.
[Applied Mechanics 2011. Velké Bílovice (CZ), 18.04.2011-20.04.2011]
Grant CEP: GA ČR GD106/09/H035; GA ČR(CZ) GAP107/10/0361
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: KLST * three-point bending * side grooving * Eurofer´97 * J-integral
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

The contribution deals with finite element analysis of stress state in sub-sized pre-cracked three-point bend specimen (KLST). A studied material was Eurofer´97 steel. The true stress-true strain curve was obtained from tensile test. The three point bend tests were carried out on plain and side-grooved specimens at ambient temperature and were simulated using ABAQUS 6.10. The stress state in KLST specimen was compared with the stress state of standard specimen. The analysis confirmed the stress state in KLST specimens at the crack tip does not correspond to conditions of standard fracture toughness determination because loss of constraint.
Trvalý link: http://hdl.handle.net/11104/0204000