About solid +orth question

[xuehanbing]

Dear all:
         the MATErial "solid" +"Orth" can describe anisotropic polycristals,how to set VECT v11 v12 v13 v21 v22 v33?
         best wishes.

[FEAP_Admin]

The manual indicates the following usage:

Code: [Select]

MATErial ma
SOLId
ELAStic ORTHotropic e1 e2 e3 nu12 nu23 nu31 g12 g23 g31
VECTor ORTHotropic v11 v12 v13 v21 v22 v23Do you need further information?

[xuehanbing]

Dear FEAP_Admin:
      I deem that I need some further information. If I want to analyze some metal material by means of  elasto-plastic model based on Hill model,I should how to set material data.
      BEST WISHES.
      XUE HANBING

[Prof. S. Govindjee]

Including

Code: [Select]

PLAStic HILL ...in the material cards will let you set the Hill parameters.  See the user manual for details.

[Yaakov]

It exists some database about material parameter (some resources are not free...)
e.g. links: http://solidmechanics.org/text/Chapter3_2/Chapter3_2.htm
3.2.17 Representative values for elastic properties of cubic crystals and compounds

if you use some commercial CAE, e.g. LS-Dyna, you have to fill more than 40 parameters  in the material card for wood in the case of impact ......

[Prof. S. Govindjee]

Another good source for material properties is the Materials Project:  https://materialsproject.org

[Yaakov]

Dear Prof. Govindjee,

Thanks very much for your shared Materials Project!

Warm regards,
Yaakov

[xuehanbing]

Dear yaakov:
         Thank you for your shared material information.now I am researching  cubic crystals material model and preparing to write some codes and implant in FEAP.How dou you think about the my thinking? Can you research the material model about  cubic crystals?If can,Please you tell some suggestions.
         Best wishes.
         xuehanbing

[FEAP_Admin]

If all you want is linear elasticity, then just use FEAP's built-in anisotropic elasticity model.

There is also an (old, meaning for FEAP version 7.4) cubic finite deformation model available; it is based on the St. Venant Kirchhoff model so be careful: http://faculty.ce.berkeley.edu/sanjay/FEAP/feap.html