Learning Forum

[Harry Begy]

I did try Monney Rivlin 2 parameter for too long and did not obtain any results. Based on Ansys support team here, I used 5 parameter instead, which worked only once.! Now I have the same issues.  and errors attached.

[Aurojyoti Prusty]

Hi,

Have you completely defined the hyperelastic property? as shown in the engineering data field as per below?

Please ensure all the fields are filled out. If you did, then the error messege might be due to your parameters are inconsistent with monney rivlin(5 parameters) materials. This could be due to missing or incorrect material constants or parameters that are essential for the material model to function correctly. It is also important to ensure that the experimental data collected from tests, such as a uniaxial test on an elastomer sample, is correctly imported into the Engineering Data module.

A relevant discussion you can find in the below link about neo-Hookean material.

/forum/forums/topic/elastomer-sample-neo-hookean-contain-invalid-property-data/

Hope this helps.

Thanks

Aurojyoti.

[Harry Begy]

Yes, neither Mooney Rivlin 2 parameter nor the 5 parameter are working for me. all the coefficients have been curve-fitted. I have checked the material coefficients several times and the boundary conditions as well. The curve fitting seemingly gives all the required paramters as in the image below, however, the error message above  " invalid property date,...elasticity is required . .." pops up.