13th International Conference on Fracture June 16–21, 2013, Beijing, China -7- Figure 10. Experimental scheme on the quasi-static compression of vanadium Figure 11 presents the stress-strain curves obtained experimentally (dashed line) and numerically (solid line). Results calculated by the described above model agree with experimental results. Figure 11. The simulation results of a cylindrical sample compression (dashed curve – the experimental results, the solid - numerical) Figures 12 and 13 demonstrate various components of the plastic strain, and figures 14, 15 display the components of the deformation caused by defects. Red areas are zones where defect concentration is maximum. The experiment on the oblique sample compression was carried out to detect the shear bands in the sample, this can be seen in the simulation results. Figures 13 and 15 in cross section area show localization of these bands. Figure 12. Component εp xz of plastic strain tensor (cross section by the Oy plane)
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