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Evaluation of Ductile Damage Parameters under High Stress Triaxiality

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Abstract

The GTN model proposed by Gurson, Tvergaard and Needleman has been widely applied to predict ductile fracture. However, the evaluation of the GTN model under high stress triaxiality has only been reported in a few studies. In this paper, a series of tensile tests on round notched specimens were performed to evaluate the applicability of the GTN model parameters under high stress triaxiality. The evaluation was carried out by comparing the predicted load-displacement curves with experimental results. It was observed the GTN model parameters only depend on the material except the critical void volume fraction. The influence of stress triaxiality on the critical void volume fraction was discussed. A further discussion about the construction of a new void coalescence criterion for the GTN model was also presented in this paper.

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References

  1. 1.

    Bridgman PW (1964) Studies in large plastic flow and fracture studies in large plastic flow and fracture. Harvard University Press

  2. 2.

    Zhong J, Xu T, Guan K, Zou B (2016) Determination of ductile damage parameters using hybrid particle swarm optimization. Exp Mech. doi:10.1007/s11340-016-0141-6

  3. 3.

    Zhang ZL, Thaulow C, Ødegård J (2000) A complete Gurson model approach for ductile fracture. Eng Fract Mech 67(2):155–168

  4. 4.

    Zhang Y, Chen Z (2007) On the effect of stress triaxiality on void coalescence. Int J Fract 143(1):105–112

  5. 5.

    Benseddiq N, Imad A (2008) A ductile fracture analysis using a local damage model. Int J Press Vessel Pip 85(4):219–227

  6. 6.

    Shi YW, Barnby JT, Nadkarni AS (1991) Void growth at ductile crack initiation of a structural steel. Eng Fract Mech 39(1):37–44

  7. 7.

    Thuillier S, Maire E, Brunet M (2012) Ductile damage in aluminium alloy thin sheets: correlation between micro-tomography observations and mechanical modeling. Mater Sci Eng A 558:217–225

  8. 8.

    Kiran R, Khandelwal K (2014) Gurson model parameters for ductile fracture simulation in ASTM A992 steels. Fatigue Fract Eng Mater Struct 37(2):171–183

  9. 9.

    Alves M, Jones N (1999) Influence of hydrostatic stress on failure of axisymmetric notched specimens. J Mech Phys Solids 47(3):643–667

  10. 10.

    Mirone G (2007) Role of stress triaxiality in elastoplastic characterization and ductile failure prediction. Eng Fract Mech 74(8):1203–1221

  11. 11.

    Bao Y, Wierzbicki T (2004) A comparative study on various ductile crack formation criteria. J Eng Mater Technol 126(3):314–324

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Correspondence to K. Guan.

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Zhong, J., Xu, T., Guan, K. et al. Evaluation of Ductile Damage Parameters under High Stress Triaxiality. Exp Mech 57, 501–504 (2017). https://doi.org/10.1007/s11340-016-0224-4

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Keywords

  • GTN model parameters
  • Applicability
  • High stress triaxiality
  • Void coalescence criterion
  • Numerical simulations