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[Christian Jakob <question226370@xxxxxxxxxxxxxxxxxxxxx>]

New question #226370 on Yade:
https://answers.launchpad.net/yade/+question/226370

Hi,

I want to investigate energy dissipation by damping and friction with Hertz-Mindlin model. I modified examples/simple-scene/simple-scene-energy-tracking.py a little bit:

...
O.trackEnergy=True
O.engines=[
 ...
		[Ip2_FrictMat_FrictMat_MindlinPhys(betan=0.9,betas=0.9,label='ContactModel')],
		[Law2_ScGeom_MindlinPhys_Mindlin(neverErase=False,label='Mindlin')]#,calcEnergy=True)]
	),
 ...
]

...

Mindlin.calcEnergy=True
def myAddPlotData():
	normal_Work	  = Mindlin.normElastEnergy()
	shear_Work	  = Mindlin.shearEnergy()
	norm_damp_dissip	= Mindlin.normDampDissip()
	shear_damp_dissip	= Mindlin.shearDampDissip()
	fric_dissip			= Mindlin.frictionDissipation()

...

Now I am facing a TypeError:  'float' object is not callable

Looking at the source code [1] gives me the hint, that these informations are not defined as usual ...

((OpenMPAccumulator<Real>,frictionDissipation,,Attr::noSave,"Energy dissipation due to sliding"))		
((OpenMPAccumulator<Real>,shearEnergy,,Attr::noSave,"Shear elastic potential energy"))
((OpenMPAccumulator<Real>,normDampDissip,,Attr::noSave,"Energy dissipated by normal damping"))
((OpenMPAccumulator<Real>,shearDampDissip,,Attr::noSave,"Energy dissipated by tangential damping"))

[1] https://github.com/yade/trunk/blob/master/pkg/dem/HertzMindlin.hpp#L146

Regards,

christian

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