Force-displacement data from indentation and Monney Rivlin constants

[Squid81]

Dear All,

I would like to extract Mooney Rivlin constants for a Monney Rivlin 2 parameters material model.

I am using indentation experiment as experimental set-up (the indenter is flat cilindrical).

I would like to use a FE inverse method to calculate the constats c10 and c01 for my model (the material is assumed to be incompressible).

I cannot understand how to correlate the constans to my data (force VS displacement) in order to implement an opthimization algorithm to extimate them.

How should I write the cost function to solve this kind of problem?

How should I calculate the sensitivity matrix in order to update my parameters?

Thanks a lot for your attention.

Regards,

Squid81

[Jorgen]

See my response to the same question.

-Jorgen

[Squid81]

Could you please write the link? I have checked already for possible previous answers but I didn't find anything.

Thanks a lot.