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http://dx.doi.org/10.12989/acd.2018.3.2.133

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)
Publication Information
Advances in Computational Design / v.3, no.2, 2018 , pp. 133-146 More about this Journal
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
steel; static tensile tests; Gurson-Tvergaard-Needleman model; determination of model parameters; numerical simulation;
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