Skip to main content
SpringerLink
Log in

Experimental Study of the Effect of Triaxiality Ratio on the Formability Limit Diagram and Ductile Damage Evolution in Steel and High Purity Copper

  • Material behaviour and formability: T. Kuwabara
  • Published:
International Journal of Material Forming Aims and scope Submit manuscript

Abstract

In this contribution, the effect of the stress state (by mean of the triaxiality ratio) on the equivalent plastic strain at fracture is experimentally investigated for different steels and high purity copper in the range of triaxiality from 0 (pure torsion) up to 1.2. This range of stress state is particularly meaningful for the majority of the mechanical applications. The prediction on the formability limit diagram for proportional loading paths (i.e. with constant triaxiality) is verified in the framework of Continuum Damage Mechanics (CDM) using the Lemaitre- Chaboche’s damage model. Furthermore the influence on triaxiality on the threshold plastic strain for damage initiation and for the critical damage at rupture is experimentally studied. The results are compared with the prediction of the aforementioned damage model. A very good agreement between experimental results and CDM prediction is achieved.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

References

  1. Bao Y., Wierzbicki T.: “On fracture locus in the equivalent strain and stress triaxiality space”. Int. Journal of Mech. Sci. 46:81-98, 2004

    Article  Google Scholar 

  2. Lemaitre J., Chaboche J.M.. “Mechanics of Solids Materials”. Cambridge Academic Press, 1985.

  3. Bonora N., “A Non Linear CDM Model for Ductile Failure”. Eng. Fracture Mech., 58:11-28, 1997.

    Article  Google Scholar 

  4. Lemaitre J., “A Course on Damage Mechanics”, Springer Verlag , Berlin, 1992

    MATH  Google Scholar 

  5. Voyiadjis G., Kattan I., “A Comparative Study of Damage Variables in Continuum Damage Mechanics” Int. Journal of Damage Mechanics, online edition, Nov. 2008.

  6. Celentano D. Chaboche J.M., “Experimental and Numerical Characterization of Damage Evolution in Steels”, Int. Journal of Plasticity, 23:1739-1762, 2007.

    Article  MATH  Google Scholar 

  7. Wu H., Xu Z., “The Shear Stress-Strain Curve Determination from Torsion Test in the Large Strain Range”, Journal of Testing and Evaluation, JTEVA20:396-402, 1992

    Article  Google Scholar 

  8. Trattnig G., Antretter T., Pippan R., “Fracture of Austenitic Steel Subject to a Wide Range of Stress Triaxiality Ratios and Crack Deformation Modes”, Eng. Fracture Mech. 75:223-235, 2008.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Dept. of R&D, Tenaris-Dalmine, p.zza Caduti 6 Luglio 1944, 1 24044, Dalmine, (BG), Italy

    G. Chiantoni

  2. Department of DiMSAT, University of Cassino, Cassino, Italy

    N. Bonora & A. Ruggiero

Authors
  1. G. Chiantoni
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. N. Bonora
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. Ruggiero
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to G. Chiantoni.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Chiantoni, G., Bonora, N. & Ruggiero, A. Experimental Study of the Effect of Triaxiality Ratio on the Formability Limit Diagram and Ductile Damage Evolution in Steel and High Purity Copper. Int J Mater Form 3 (Suppl 1), 171–174 (2010). https://doi.org/10.1007/s12289-010-0734-z

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12289-010-0734-z

Keywords

Search

Navigation