yade-users team mailing list archive

[Christian Jakob <jakob@xxxxxxxxxxxxxxxxxxx>]

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
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