Hi, anisotropic hyperelasticity AND viscoelasticity is not yet supported, only the isotropic case. This will be the case in v12 of ANSYS Armin

Keycut variable Hi, in ANSYS Usermat you will find the keycut variable. If you set it to 1, ANSYS performs a bisection due to the ANSYS solution log...

Jorgen, just one more question: if you talking about the variation of Kirchhoff stress with respect to the rate of deformation tensor, its the so cal...

Which tangent modulus? Hi Paul, hi Jorgen, Paul are you shure, that you are using the right tangent modulus? Which one do you use? Up to my knowledg...

Hi all, another possibility is to use ANSYS: It does NOT require that the long-term modulus must be non-zero. Of course, that does not mean that the ...

Hi waterlilly, In ANSYS v11 you can use a uniaxial, biaxial, pure shear, simple shear and a volumetric test all together in the cuve fitting routine....

Finite linear viscoelasticity Sunil, Jorgen sorry I didnt see the reply last year... I want to add some comments: - Be careful using creep test da...

Hi all, I only want to mention that in ANSYS a FINITE linear viscoelastic model is implemented (from Holzapfel). Therefore you can combine viscoelast...

Jauman rate Hi Jorgen, hi Emanuele, could your convergence difficulties be an issue of using Jauman rates ❓ May be Im wrong, but as far as I remem...