simtk.org

Hello everyone,
i wanted to have a feedback on HGO (decoupled) material parameter settings:

As I set:
HGO-{
a4: / b4: / a6: / b6:
kappa: (k=0) }

Is the parameter mu appearing in the formulation (see figure) derived from "Elasticity modulus" (E) and "Poisson ratio" keywords so that mu=E/(2*(1+poisson))? That is, is mu=shear modulus of the isotropic material matrix ?

Thank you!

Hi Sara,

You are correct, the parameter mu=E/(2*(1+poisson)) is used in the HGO material model. See lines 2398 and 2467 in https://github.com/SimVascular/svFSI/bl ... EADFILES.f.

These values are later used at line 190 in https://github.com/SimVascular/svFSI/bl ... ATMODELS.f

Cheers,
Dave

Thank you really much!
Another thing: is there a way in svFSI to set (some or all) the solver parameters available in svsolver (see figure)?
For example Residual criteria, residual control, step construction, ...

as far as I know, the available settings are:

Add equation: FSI {
Coupled: ...
Min iterations: ..
Max iterations: ....
Tolerance: ...
.....}

Tnx!

Hi Sara,

All of the parameters used by svFSI are documented here https://github.com/SimVascular/svFSI/bl ... master.inp.

Cheers,
Dave

Ok, so there are only the abovementioned ones thanks

One last little question:
How are the "Def_Grad" array components saved? ( in struct simulations results for example)
Just to make sure the corresponding components are linked to the right array positions
(see figure)

Thank you!

Hi Sara,

Looking at the svFSI code in POST.f it seems that Def_Grad data is output by row: 0,1,2 / 3,4,5 / 6,7,8.

Cheers,
Dave