Improvements to hyperelasticity example #461
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
I also forgot to fix the tangent in my PR. Maybe you can put it into this PR: ∂C∂S=4∂C∂Ψ. -> ∂C∂S=4∂²C∂Ψ². |
fredrikekre
force-pushed
the
fe/hyperelasticity
branch
from
2c9b021
to
3229a26
Compare
fredrikekre
changed the title
fredrikekre
force-pushed
the
fe/hyperelasticity
branch
from
3229a26
to
a03090e
Compare
| @@ -66,9 +78,72 @@ import KrylovMethods, IterativeSolvers | |||
| # and the tangent of ``\mathbf{S}`` as | |||
| # | |||
| # ```math | |||
| # \frac{\partial \mathbf{S}}{\partial \mathbf{C}} = 4 \frac{\partial \Psi}{\partial \mathbf{C}}. | |||
| # \frac{\partial \mathbf{S}}{\partial \mathbf{C}} = 2 \frac{\partial^2 \Psi}{\partial \mathbf{C}^2}. | |||
There was a problem hiding this comment.
4 times was correct. We have
and
| @@ -89,53 +164,51 @@ function constitutive_driver(C, mp::NeoHooke) | |||
| ## Compute all derivatives in one function call | |||
| ∂²Ψ∂C², ∂Ψ∂C = Tensors.hessian(y -> Ψ(y, mp), C, :all) | |||
| S = 2.0 * ∂Ψ∂C | |||
| ∂S∂C = 4.0 * ∂²Ψ∂C² | |||
| ∂S∂C = 2.0 * ∂²Ψ∂C² | |||
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.