  A simplified 3D FE model based on McCormick's model is developed to
numerically predict the spatiotemporal behaviors of the PLC effect in Ti-12Mo
alloy tensile tests at 350 degrees C with strain rates from the order of
$10^{-4}$ s$^{-1}$ to $10^{-2}$ s$^{-1}$. The material parameter identification
procedure is firstly presented in details, and the simulated results are highly
consistent with experimental ones, especially in terms of stress drop
magnitudes and PLC band widths. The distribution of simulated stress drop
magnitudes at a constant tensile velocity (0.01 mm/s) follows a normal
distribution and its peak value is in the range of 26-28 MPa. Furthermore, the
simulated band width slightly fluctuates with the increase of true strain and
its average value is about 1.5 mm. Besides, the staircase behavior of
strain-time curves and the hopping propagation of the PLC band are observed in
Ti-12Mo alloy tensile process, which are related to the strain localization and
stress drop magnitudes.
