PSI - Issue 6

N.S. Selyutina et al. / Procedia Structural Integrity 6 (2017) 77–82 Author name / Structural Integrity Procedia 00 (2017) 000 – 000

79

3

Fig. 1. Dependence of the yield stress on the strain rate for aluminum alloy 2519 A (Liu et al. (2014)) at room temperature according to the classical Johnson-Cook model (Johnson and Cook (1985)) (curve 1) and the incubation time criterion (Gruzdkov and Petrov (1999), Gruzdkov et al. (2002)) (curve 2).

Fig. 2. Dependence of the yield stress on the strain rate for aluminum alloy 7449-T7651 (Mylonas and Labeas (2014)) at room temperature according to the classical Johnson-Cook model (Johnson and Cook (1985)) (curve 1), the incubation time criterion (Gruzdkov and Petrov (1999), Gruzdkov et al. (2002)) (curve 2) and Cowper-Symonds formula .