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[behzad <question259209@xxxxxxxxxxxxxxxxxxxxx>]

New question #259209 on Yade:
https://answers.launchpad.net/yade/+question/259209

Hey guys,

Imagine we have a cylindrical sample and we want to independently do the following tests:

1- Static tress controlled uniaxial compression (or even tension) 

2- Dynamic tress controlled uniaxial loading (e.g. a sinusoidal stress loading)

3-Dynamic uniaxial straining 

How do we do it? Any built-in functions?

For the third case I tried 

O.engines=O.engines+[UniaxialStrainer(strainRate=math.cos(O.time)*1e-2,axis=2,asymmetry=0,posIds=[1],negIds=[0],
crossSectionArea=0.0025,label='strainer')]

or 

O.engines=O.engines+[UniaxialStrainer(strainRate=E_rate,axis=2,asymmetry=0,posIds=[1],negIds=[0],
crossSectionArea=0.0025,label='strainer')]
O.engines=O.engines+[PyRunner(iterPeriod=1,command='initTest()',label='strainCollector')]

def initTest():
	global mode
	E_rate=math.cos(O.time)*1e-2
	strainer.strainRate=E_rate

But it didn't work!

Any ideas and comments are appreciated!
Thanks,
Behzad




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