Paper Titles
Identification and Simulation of Elastic-Plastic Deformation Model
p.315
New Description of Steady-State Creep Rate, Yield Stress, Stress Relaxation and Their Interrelation
p.319
Computational Modelling of Spherical Cavity Behaviour in Rubber-Like Solids
p.323
Tangent Moduli of the Hencky Material Model Derived from the Stored Energy Function at Finite Strains
p.327
Modelling of the Charpy Impact Test in the DBTT Range
p.331
Parameters Identification for GTN Model and Their Verification on 42CrMo4 Steel
p.335
A Fracture Mechanics Investigation on Crack Growth in Massive Forming
p.339
Finite Element Computational Technology in Resonant Ultrasound Spectroscopy of Composite Materials
p.343
Compatibilizer Effect of Grafted Glycidyl Methacrylate on EPDM/Organoclay Nanocomposites
p.347

Modelling of the Charpy Impact Test in the DBTT Range

Article Preview

Abstract:

The finite element method was used in order to compute the energy balance and the stress-strain distribution in the Charpy V-notch specimen. Inertial effects were taken into account by a fully dynamic computation. It was shown that inertial oscillations are damped by viscoplasticity ahead the notch and vanish rapidly. 3D modelling is needed since large scale yielding and ductile crack growth occur. The ductile crack front is curved, which is important to account for in order to correctly describe the stress distribution in the specimen. Ductile crack growth in Charpy specimen was predicted by the GTN (Gurson-Tvergaard-Needleman) model. The GTN model allows a good failure prediction with strain rate and temperature independent damage parameters.

You might also be interested in these eBooks
Materials Structure & Micromechanics of Fracture View Preview

Info:

Periodical:

Materials Science Forum (Volume 482)

Pages:

331-334

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.482.331

Citation:

Cite this paper

Online since:

April 2005

Authors:

Petr Haušild, Clotilde Berdin, Andreas Rossoll

Keywords:

Ductile Fracture, Finite Element Model (FEM), Gurson Model

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] L. A. Gurson : J. Eng. Mat. Tech. 99 (1977), pp.2-15.

Google Scholar

[2] V. Tvergaard, Int. J. Fracture 17 (1981), pp.381-388.

Google Scholar

[3] V. Tvergaard, A. Needleman, Acta Metal. 32 (1984), pp.157-169.

Google Scholar

[4] A. Rossoll, C. Berdin, C. Prioul: Int. J. Fracture 115 (2002), pp.205-226.

DOI: 10.1023/a:1016323522441

Google Scholar

[5] P. Haušild, I. Nedbal, C. Berdin, C. Prioul: Mater Sci Eng. A 335/1-2 (2002), pp.164-174.

Google Scholar

[6] HKS ABAQUS/Standard, Version 6. 4. 1, User's Manual, HKS Inc., USA, (2003).

Google Scholar

[7] T. Siegmund, W. Brocks, Technical report GKSS/WMG/97/2, Geesthacht, Germany, (1997).

Google Scholar

[8] U. Mühlich, T. Siegmund, W. Brocks, Technical report GKSS/WMG/98/1, Geesthacht, Germany, (1998).

Google Scholar

[9] P. Haušild, I. Nedbal: Kovové Mater. 41 (2003), pp.81-86.

Google Scholar

[10] A. Rossoll, C. Berdin, P. Forget, C. Prioul, B. Marini: J. Nucl. Eng. Des. 188 (1999).

Google Scholar