@jorgen Many thanks, appreciated.

Well, this is pretty straight forward. In the first case, they are known as 'strain invariants' because they are based on the Cauchy-Green deformat...

It would be better if you can include the said expressions for easier understanding. ~Melly

Finally, I managed to solve the problem by following the manual installation guide found in this link

@jorgen Many thanks. I appreciate your guidance.  I will work on this and I believe that it will eventually work well.  Yes, I prefer ...

@jorgen Many thanks.  Attached is my mcal file. I used data from the external solver demo available in the documentation section.  I t...

@jorgen Many thanks.  I am not so clear on what to do next after editing the input file template. Perhaps I have to check carefully on the do...

@jorgen Thank you so much, Dr. Jorgen. I appreciate your help.  With MCalibration, all this is possible once the material model has been cali...

@jorgen Many thanks for the clarification.  I am still trying to figure out how to get material behavior at different temperatures.  S...