PSI - Issue 23

Petr Kubík et al. / Procedia Structural Integrity 23 (2019) 15–20 Petr Kubík et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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5. Results and discussion

Force response of dog-bone specimen predicted by von Mises yield criterion was in a good agreement with experiment, which proves satisfactory flow curve estimation (Fig. 3). On the other hand, it over-predicted the forces in the case of flat grooved specimen, while the Kroon – Faleskog yield criterion predicted very close response (Fig. 3).

Fig. 3. Comparison of force responses from experiment and computation for dog-bone specimen (left) and flat grooved specimen (right).

Fig. 4. Equivalent plastic strain predicted in necking zone of the dog-bone specimen by von Mises (above) and Kroon – Faleskog (below) criteria.