group_materi_plasti_vonmises_nadai index C $\kappa _0$ n

Data for Von-Mises Nadai hardening. The $\sigma _{y0}$ of the group_materi_plasti_vonmises record is taken as $\sigma _{y0}$ in the nadai law.

The index specifies the element_group, see element_group. Condition: materi_plasti_kappa should be initialized.