Hi,

ANSYS provides various material models, including hyperelasticity and a special model called "porous elasticity". As far as I know there is no special material model available for biomaterials such as tissue.

Do you need to run a coupled pore-pressure mechanical analysis? Then try the CPT family of elements available in ANSYS from v17 on. These elements also support hyperelasticity for the porous material.

Regards

For hyper elastic material use Mooney-Rivlin or Neo-Hookean or Ogden model of ansys. For poro-elastic you should know the modulus of elasticity of the material having porosity, which you can find from test or any available literature.

https://www.youtube.com/watch?v=253azXzBNHs

Thanks a lot for your help. I think I did not explain my goal clearly. I have used Hyper-elastic/plastic and porous materials separately in ANSYS and ADINA. I am going to consider both of them as a single material in ANSYS. I think it is possible in ABAQUS.

Hi Shahab Khakpour , As far as I know in Ansys :

for porous metals you can use this command:

TB

TB, Lab, MATID, NTEMP, NPTS, TBOPT, --, FuncName Activates a data table for material properties or special element input.

Also for Hyper-elastic:

Material Model Element Support in the Material Reference . Lab Material model data table type: AFDM — Acoustic frequency-dependent material. AHYPER — Anisotropic hyperelasticity . ANEL — Anisotropic elasticity . AVIS — Anisotropic viscosity . BB — Bergstrom-Boyce

TB

TB, Lab, MATID, NTEMP, NPTS, TBOPT, --, FuncName Activates a data table for material properties or special element input.

coefficients to your curve data, determine a fit with existing model, and write the data according to the table configurations outlined in the TB command. Curve-fitting is available for nonlinear models associated with the material behaviors listed below: For hyperelastic material behavior, see "TBFT Specifications for Hyperelastic Models" . For viscoelastic material behavior, see "TBFT Specifications

TBFT

TBFT, Oper, ID, Option1, Option2, Option3, Option4, Option5, Option6, Option7, –, Option9 Performs material curve-fitting operations.