In this example, the automatic method will be used to perform fitting for an integral viscoelastic model with experimental data curves of shear viscosity vs. shear rate at three different temperatures, plus data curves for the storage and loss moduli.

The KBKZ model with 4 relaxation times will be used with the reversible PSM damping function. For temperature dependence, the Arrhenius approximate law will be used. Ansys Polymat will automatically set the value of to 220° C, since this is the average temperature of the viscosity curves.

For the fitting calculation, the range of relaxation times will be limited to between 0.1 and 10.