group_materi_plasti_diprisco index $\gamma$ $\hat{\beta_f}$ $b_p$ $c_p$ $t_p$ $\hat{\theta}_c$ $\hat{\theta}_e$ $\xi _c$ $\xi _e$ $\beta _f^0$ $C$

Yield data for di Prisco plasticity. The index specifies the element_group, see element_group. Condition: materi_strain_plasti should be initialized.