yade-dev team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

> - Before fix, the (normalized) diff between total energy and boundary work was around 5e-3
> (0.5%) for a compression εyy=0.1 (~60k iterations), as in attachment of
> https://lists.launchpad.net/yade-dev/msg06180.html.
> - After fix, the diff is 2.4e-4.

Going back to the dynamic case (energy.py) :
It can be verified that there is an unbalanced energy evolution
independant of friction and damping.
To make plastic dissipation 0, it is enough to set frictionAngle close
to pi/2.
For damping, make it 0.
The results are attached. ScGeom and L3 give different paterns.

Cheers.

Bruno

Attachment: energy-loss-L3.png
Description: PNG image

Attachment: energyloss-ScGeom.png
Description: PNG image