Publication detail

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

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

Original Title

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

Type

conference paper

Language

English

Original Abstract

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.

Keywords

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

Authors

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

RIV year

2012

Released

14. 5. 2012

Publisher

Institute of Theoretical and Applied Mechanics

Location

Praha

ISBN

978-80-86246-40-6

Book

Engineering mechanics 2012

Pages from

1253

Pages to

1258

Pages count

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"
}