Now that you have defined initial values for all the relevant material parameters for your model, you can begin the process of determining the values that best fit your experimental data.
Click the menu button near the top of the Ansys Polymat application window. Ansys Polymat will use your initial values to compute the curves you selected in the Load Curves (Part I) menu (as described in Specifying the Curves to be Calculated), and then it will draw them in the chart.
Add the experimental data curve to the plot, by clicking the Import... chart button (
) and selecting the appropriate file in the browser that
opens.See Defining and Plotting Curves for other information about graphical plots.
Return to the Material Data menu and change the values of the material parameters. If you are not familiar with the fluid model you are using, see Material Data Parameters. Note that it is often easier to vary the material parameters one at a time, so that you can analyze the effects of each of them before trying to actually fit the model.
Click the menu button, and the plot in the chart will be updated to show the new curve (as well as the old one and the experimental curve).
Repeat the previous two steps until the computed curve(s) are close enough to the experimental curves.
If you are varying one parameter at a time, return to the Material Data menu and change the value of one of the other material parameters. If not, skip to the end of this procedure.
Click the menu button to update the plot with the newly computed curve.
Continue to change the value of the second parameter and update the plot until you find the best value for this parameter as well.
Repeat the previous three steps until you have found the best values for all parameters.
Important: Remember to save your values to a material data file, as described in Reading and Writing Material Data.