Evolution of fibre orientation in radial direction in a center-gated disk: Experiments and simulation

The evolution of fibre orientation in transient simulations with the Folgar-Tucker model and its slip and reduced strain closure versions was assessed against experimental data measured in the shell, transition, and core layers. Decoupled and coupled transient simulations were performed using a measured orientation profile at the inlet of the mould. All three orientation models match the experimental data only in the steady region of the shell layer but are unable to predict the evolution of orientation in all three layers. Effects of coupling are very small and unable to account for the discrepancies between the experiments and simulations.