yade-dev team mailing list archive

[Jerome Duriez <duriez@xxxxxxxxxxxxxxx>]

Václav S a écrit :
> Jerome,
>
> I am sorry, but how about some more meaningful name instead of
> "ContactLaw1"?
>
>   
I am even more sorry than you but I have sincerely not much idea. As I 
wrote it in the files this law is in fact quite similar to the 
CohesiveFrictionnalContactLaw. The differences are :
- there is nothing more linked with "brokenBodies"
- no creep (I just noticed that I could have suppressed the comments, sorry)
- no more adhesion or cohesion
- the main new point is the inelastic behaviour in compression, with the 
"coeff_dech" variable
And as in CohesiveFrictionalContactLaw there is computation of moment 
for example.
Because I personnly didn't understand, thanks to the name, that for 
example in CohesiveFrictionalContactLaw you can simulate moment transfer 
or creep (that's the same for all contact laws and I would even say that 
for all the yade source files ;-) ) I didn't indeed search for an other 
name... Maybe "InelasticCompressionAndMomentTransferContactLaw" ?? But I 
thought you don't like long names... So again very sorry : I don't want 
to offense anyone but sincerely I don't see which name I could give... 
If the suggestion above satisfies you, or if you have better ideas, feel 
free to rename it, I don't mind (it honours you to look after meaningful 
names !)
NB : Moreover I don't know how to rename svn tracked files...
> Second, for the roll angle and so on: I would be glad if those things
> could move to SpheresContactGeometry, like I did it with shear, so that
> constitutive laws don't repeat the same code over and over (the same for
> twisting).
> If you can elaborate what angle do you need for your law and
> how tom compute it from geometry, I will try to implement that within
> the contact geom.
>
> Regards, Vaclav
>
>
>   
I understand it very well. I didn't notice you made attempts in this 
field, sorry. All that concerns moment transfer was purely and simply 
copied-pasted from CohesiveFrictionalContactLaw (with only the add a of 
plastic threshold). So I believe that this is Janek who wrote the lines 
I copied, so I think that he would answer you much better than me... 
This work has not yet been done also in CohesiveFrictionalContactLaw 
isn't it ?

Tell me if you have other remarks, I'll try to answer as better as I 
can... (that was the case in this mail even if I could not answer you 
precisely !)

Jerome