yade-users team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

> It seems to me that if I put some beads into a container, then tip the 
> container, the angle at which they start flowing is the angle of 
> internal friction..  I am not at all sure of this, it seems far to 
> simple.
Not really. Angle of repose corresponds to "internal packing friction", 
which "depends on" contact friction but is not equal.
Most materials have contact friction around 30°. Put this value at 
contact in a loose sphere packing and you will get an internal friction 
around 18°.
Anyway, you should get realistic results as soon as you define a decent 
friction (say between 10 and 40), this is not a crucial parameter yet.

Bruno