Issue 44

G. G. Bordonaro et alii, Frattura ed Integrità Strutturale, 44 (2018) 1-15; DOI: 10.3221/IGF-ESIS.44.01 8 (a) Cross-section of the real rolled product. (b) Cross-section of the simulated profile: thermal contour. (c) Cross-section of the simulated profile: stress contour. Figure 5 : H profile geometry: comparison of real sample vs. simulated results. (a) Cross-section of the real rolled product. (b) Cross-section of the simulated profile: thermal contour. (c) Cross-section of the simulated profile: stress contour. Figure 6 : Z profile geometry: comparison of real sample vs. simulated results. (a) Rolling initial condition before deformation. (b) Rolling at steady-state after deformation. Figure 7 : Sample of the 3D finite element models developed for the flat hot rolling simulations. The material behavior is modeled using a rigid-plastic flow formulation based on the Levy-Mises model [17] as described above, rolls are assumed to be rigid, and thermo-mechanical boundary conditions are implemented in the model. Contact pressure in the rolls-workpiece interface is defined according to the described Coulomb friction model with a constant friction coefficient μ = 0.4.