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Re: [Question #231810]: [triaxial test] Modify stressMask to apply additional force while being controlled the strain rate

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Bruno Chareyre <question231810@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 15 Jul 2013 09:16:07 -0000
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Question #231810 on Yade changed:
https://answers.launchpad.net/yade/+question/231810

    Status: Open => Answered

Bruno Chareyre proposed the following answer:
I think I get it... you want to show dynamic failure, right?

Well, just type what you are requiring form the engine:
stressMask=2
triax.goal2=100000+1000

Then at each step:
triax.goal1=triax.goal3=-0.5*triax.strainRate[2] #or whatever it is called, I didn't check

You want to set strainDamping=0 so that it immediatly applies.


Alternatively, keep stressMask=0 and define you own servo-control. Then do something like this at each step:
rate2=f(stress, targetStress)
goal2=rate2
goal1=goal3=-0.5*goal2

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