Ansys Material Calibration

Material Calibration enables you to quickly and easily calibrate test data using models from the Ansys Mechanical solver.

Note: This is an additional capability and is licensed separately from Granta MI. If you want to use this capability and it is not available, contact your System Administrator.

When you open Material Calibration for the first time, you can use this page to familiarize yourself with the key components in the application.

  1. New - clear the current session and start a new calibration.
  2. Select - choose material models to fit to your test data.
  3. Settings - change Material Calibration settings such as the unit system.
  4. Models panel - view fitted coefficients and fit residuals, or enter initial values, for currently-selected models.
  5. Plot - visualize test data, preview model curves for initial values, and view fitted curves.
  6. Axis - select properties to plot on the X Axis and Y axis, and whether the scale is linear or logarithmic.
  7. Legend - view information about data series and parameters, and choose which curves to display on the plot.
  8. Replot - refresh the plot area after changing model coefficients to preview model curves.
  9. Initialize - automatically estimate a set of initial values prior to calibration.
  10. Calibrate - fit the selected material models to the current test data, using the entered coefficient values as initial values.
  11. Export - export fit coefficients from some or all models to Granta MI.
Note:
  • Material Calibration must always be used with a consistent unit system. Ansys recommend using one of SI (Consistent), FPS (Consistent) or IPS (Consistent). It is only possible to use CGS (Consistent) for Volumetric test data (the dyne unit is currently configured in a way which makes it incompatible with the Ansys Material Calibration Service). Unit system can be changed in the Granta MI Settings.
  • In-house databases (those not supplied with Granta MI) must use the Granta MI version of a unit system if used with Material Calibration, to avoid errors due to missing or mismatched units.
  • Volumetric coefficients for hyperelasticity are not covered by the automatic initialization process. Recommended value is 1/Initial ShearModulus or a smaller value.
  • Material Calibration is only supported in a single session on the same machine.