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Message #23451
Re: [Question #691610]: Magnitude of contact normal force
Question #691610 on Yade changed:
https://answers.launchpad.net/yade/+question/691610
Jan Stránský posted a new comment:
>From the dimensions:
V = 90mm*90mm*180mm = 0.00146 m3
Vs = V*0.6 = 0.000874 m3 (0.6 some estimation of porosity)
V1 = Vs / 1000 = 8.74e-7 m3
r = (V1/(4/3*pi))**(1/3) = 6 mm
d = 12 mm
So in the other experiment uses roughly 2x larger particles, which (as mentioned above) would result in 4x higher forces (preserving external stress).
Which is still much lower than you "need"..
But for the case of large-large particles, the force could be higher..
Do they use some force measure other than maximum?
cheers
Jan
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