When a Short Fiber Composite Model is selected, you can use the Hill Plasticity Curve Fitting Analysis to characterize the nonlinear behavior of the composite material. (See Hill Plasticity Curve Fitting for Short Fiber Reinforced Composites in the theory chapter.)
If you perform a companion Variable Analysis (as shown in the figure below), the resulting material properties from both analyses will be combined when exported to Workbench. In fact, the Curve Fitting analysis is intended to be used in combination with a Variable Analysis which includes (at minimum) the orientation tensor components as parameters.
