Is there a push-forward operator of a RankFourTensor?

[eDgar]

Hello,

I want to do a push forward of a fourth order tensor. In indicial notation, this looks like

B_ijkl = F_iI F_jJ F_kK F_lL A_IJKL

F_mn is the deformation gradient tensor. I am planning to program it, but if it’s already there, I don’t have to do it. Thanks!

[Stephanie Pitts]

Edgar,

There is a rotate method in RankFourTensor.C that performs the rank-2 and rank-4 operation you've listed. While that method was written to take a rotation matrix, it may work if you pass in the deformation gradient as the RankTwoTensor argument to the method. Take a look at the doxygen for the rotate method definition.

Hope that helps,

Stephanie

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[eDgar]

On Friday, April 6, 2018 at 4:22:58 PM UTC, Stephanie Pitts wrote:

Edgar,

There is a rotate method in RankFourTensor.C that performs the rank-2 and rank-4 operation you've listed.

Lovely! I'll check it out :) . Thank you very much, Dr. Pitts