yade-users team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

Hi,

you cannot mix "materials" by this way.
If you need a local damping in HM, you will, probably, need to write
your own HM-visco material, if it has physical meaning.

Anton




On Wed, Jun 29, 2011 at 10:14 AM, Christian Jakob
<jakob@xxxxxxxxxxxxxxxxxxx> wrote:
> Hello again,
>
> I need to create a material with Hertz-Mindlin contact model (given
> shear modulus and poisson ratio) with viscous damping in normal and
> shear direction. The question is: How can I do this?
>
> I can create a viscous elastic material with linear contact model ...
> O.materials.append(ViscElMat(density=2700,kn=1e8,ks=1e8,frictionAngle=1,cn=0.002,cs=0.001))
>
> and I can create an inelastic material with Hertz model, but without
> viscous damping ....
> O.materials.append(NormalInelasticMat(young=2e7,poisson=0.3,frictionAngle=1,coeff_dech=1))
>
> if I try to combine, an error occured:
> O.materials.append(NormalInelasticMat(young=2e7,poisson=0.3,frictionAngle=1,coeff_dech=1,cn=0.002,cs=0.001))
>
> "AttributeError: No such attribute: cn"
>
>
> Regards,
>
> Christian Jakob
> --
> This message was sent from Launchpad by
> Christian Jakob (https://launchpad.net/~jakob-ifgt)
> using the "Contact this team" link on the yade-users team page
> (https://launchpad.net/~yade-users).
> For more information see
> https://help.launchpad.net/YourAccount/ContactingPeople
>
> _______________________________________________
> Mailing list: https://launchpad.net/~yade-users
> Post to     : yade-users@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~yade-users
> More help   : https://help.launchpad.net/ListHelp
>