The synthetic test data above was generated by running an Abaqus analysis using the following material model:

*MATERIAL, NAME = MR_MULLINS
*Hyperelastic, Mooney-Rivlin
1.0, 0.011, 0.0007
**
*MULLINS EFFECT
** r    m    beta
1.43, 0.29, 0.212
 

The video below was created on July 15, 2025, using the 3DExperience Calibration App, public cloud, R2025, HotFix 4.10.  The purpose of this video is to show a worked example of calibrating using both a UHyper and a UMullins user subroutine.

The "standardU.dll" file was created on a Win11 computer like this:

abq2025hf3 make library=UHyper_MR_UMullins.for

The zip file contains all the files I used for this worked example:

Example with Custom Schema   (July 20, 2025)

In the current version of the Calibration App, R2025x FD03, the "Custom Schema" is implemented for only the CREEP and UMAT user-subroutines.  For our next release, which will be R2026x FD01, we are in the process of adding Custom Schema use across all the material user-subroutines that we support.  Recall that the Custom Schema is used in the Calibration App so that information (parameters) can be passed into the user-sub by way of the *Parameter Table.  I made the video below on July 20, 2025 using a development version of the Calibration App.

The zip file below contains all the pertinent files.    

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