Detail publikace

Modelling of ductile fracture for sub-sized three-point-bend geometry

STRATIL, L. HADRABA, H. KOZÁK, V. DLOUHÝ, I.

Originální název

Modelling of ductile fracture for sub-sized three-point-bend geometry

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

The contribution deals with the simulation of R-curve using complete Gurson model of ductile fracture. The R-curve was experimentally determined for a Eurofer97 steel on sub-sized three-point-bend geometry in previous study. To apply complete Gurson model the parameters describing the voids' behaviour and characteristic length parameter need to be determined. The nucleation parameters were identified by single specimen method of smooth tensile test specimen and from metallographic examination of fracture micro-mechanism. The characteristic length parameter was derived by fitting load versus deflection curves of sub-sized specimens. The simulations of the tests were carried out by FEM software ABAQUS 6.11 in Standard and Explicit modules. The identification was supported by parametric studies. Comparing experimental and simulated R-curve the ductile tearing was not successfully achieved. Insufficient calibrated parameters as a result non-uniqueness problem of single specimen method were found.

Klíčová slova

complete Gurson model, single specimen approach, Eurofer97, R-curve

Autoři

STRATIL, L.; HADRABA, H.; KOZÁK, V.; DLOUHÝ, I.

Rok RIV

2012

Vydáno

14. 5. 2012

Nakladatel

Institute of Theoretical and Applied Mechanics

Místo

Praha

ISBN

978-80-86246-40-6

Kniha

Engineering mechanics 2012

Strany od

1253

Strany do

1258

Strany počet

6

BibTex

@inproceedings{BUT98501,
  author="Luděk {Stratil} and Hynek {Hadraba} and Vladislav {Kozák} and Ivo {Dlouhý}",
  title="Modelling of ductile fracture for sub-sized three-point-bend geometry",
  booktitle="Engineering mechanics 2012",
  year="2012",
  pages="1253--1258",
  publisher="Institute of Theoretical and Applied Mechanics",
  address="Praha",
  isbn="978-80-86246-40-6"
}