Advances in Computational Design

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Numerical simulation of material damage for structural steels S235JR and S355J2G3

  • Kossakowski, Pawel G. (Department of Strength of Materials and Concrete Structures, Kielce University of Technology) ;
  • Wcislik, Wiktor (Department of Strength of Materials and Concrete Structures, Kielce University of Technology)
  • Received : 2017.12.12
  • Accepted : 2018.02.03
  • Published : 2018.04.25
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Abstract

The paper discusses numerical analysis of tensile notched specimens with the use of Gurson - Tvergaard - Needleman (GTN) material model. The analysis concerned S235JR and S355J2G3 steel grades, subjected to medium stress state triaxiality ratio, amounting 0.739. A complete procedure for FEM model preparation was described, paying special attention to the issue of determining material constants in the GTN model. An example of critical void volume fraction ($f_c$) experimental determination procedure was presented. Finally, the results of numerical analyses were discussed, indicating the differences between steel grades under investigation.

Keywords

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