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[Jérôme Duriez <question284255@xxxxxxxxxxxxxxxxxxxxx>]

Question #284255 on Yade changed:
https://answers.launchpad.net/yade/+question/284255

    Status: Open => Answered

Jérôme Duriez proposed the following answer:
Hi,

With stressMask = 0, the goal attributes of PeriTriaxController
correspond to strain values. Here you're asking to impose strain equal
to resp. 0.5 ; 0.5 and 1 (or *100,000) in the 3 directions.

This corresponds to a volumetric strain = 0.5 + 0.5 + 1 = 2 (or 200,000)
-- at least in the small strain regime -- which is difficult to
associate to a constant volume...

As a first guess, try something like triax.goal=(0.5,0.5,-1)
 ;-)

(but such values will probably require you to give a close look to
finite strain theory)

Jerome

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