Publication detail
Stress state analysis of sub-sized pre-cracked three-point-bend specimen
STRATIL, L. KOZÁK, V. HADRABA, H. DLOUHÝ, I.
Czech title
Analýza napjatosti v podrozměrném tělese s trhlinou pro tříbodový ohyb
English title
Stress state analysis of sub-sized pre-cracked three-point-bend specimen
Type
journal article - other
Language
en
Original abstract
The contribution deals with finite element analysis of stress state in sub-sized pre-cracked three-point bend specimen (KLST). A studied material was Eurofer97 steel. The true stress-true strain curve was obtained from tensile test. The three-point-bend tests were carried out on pre-cracked plain and side-grooved specimens at ambient temperature. Performed tests were simulated using FEA software ABAQUS 6.10. The stress state in KLST specimen was compared with the stress state of pre-cracked Charpy and 1T SENB. The analysis confirmed the stress state in KLST specimens at the crack-tip does not correspond to the stress state of standard fracture toughness determination because of loss of crack-tip and out-of-plane constraint.
Czech abstract
Příspěvek se zbývá konečnoprvkovou analýzou stavu napjatosti v podrozměrném tělese s trhlinou pro tříbodový ohyb (KLST). Zkoumaným materiálem byla ocel Eurofer97. Křivka oceli skutečné napětí-skutečná deformace byla získána z tahové zkoušky. Ohybové zkoušky byly provedeny na hladkém a bočně vrubovaném tělese při pokojové teplotě. Provedené zkoušky byly simulovány v konečnoprvkovém softwaru ABAQUS 6.10. Stav napjatosti na čele trhliny v KLST tělese byl srovnán se stavem napjatosti v Charpy tělese s trhlinou a standardním ohybovém tělese tloušťky 1T. Analýzy potvrdily, že napěťový stav na čele trhliny v KLST tělesa neodpovídá stavu napjatosti pro standardní podmínky určení houževnatosti kvůli ztrátě constraintu na čele trhliny a ztrátě out-of-plane constraintu.
English abstract
The contribution deals with finite element analysis of stress state in sub-sized pre-cracked three-point bend specimen (KLST). A studied material was Eurofer97 steel. The true stress-true strain curve was obtained from tensile test. The three-point-bend tests were carried out on pre-cracked plain and side-grooved specimens at ambient temperature. Performed tests were simulated using FEA software ABAQUS 6.10. The stress state in KLST specimen was compared with the stress state of pre-cracked Charpy and 1T SENB. The analysis confirmed the stress state in KLST specimens at the crack-tip does not correspond to the stress state of standard fracture toughness determination because of loss of crack-tip and out-of-plane constraint.
Keywords in Czech
KLST, tříbodový ohyb, boční vrubování, Eurofer97, J-integrál
Keywords in English
KLST, three-point bending, side grooving, Eurofer97, J-integral
RIV year
2012
Released
30.09.2012
Publisher
Association for Engineering Mechanics
Location
Brno
ISSN
1802-1484
Volume
2012(19)
Number
2/3
Pages from–to
121–129
Pages count
9
BIBTEX
@article{BUT98412,
author="Luděk {Stratil} and Vladislav {Kozák} and Hynek {Hadraba} and Ivo {Dlouhý},
title="Stress state analysis of sub-sized pre-cracked three-point-bend specimen",
year="2012",
volume="2012(19)",
number="2/3",
month="September",
pages="121--129",
publisher="Association for Engineering Mechanics",
address="Brno",
issn="1802-1484"
}