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specifying a global constraint on an internal variable

Posted May 7, 2012, 3:46 a.m. EDT Materials, Structural Mechanics Version 4.2 2 Replies

Lakshmi Selvakumaran
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is there a way to specify a constraint that the average of a stress component must be zero?
2 Replies Last Post May 8, 2012, 2:32 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago May 7, 2012, 4:59 a.m. EDT
Hi

i do not believe you have them "pre-cooked", but it should be possible via a weak equations or an external ODE

--
Good luck
Ivar
Hi i do not believe you have them "pre-cooked", but it should be possible via a weak equations or an external ODE -- Good luck Ivar
Lakshmi Selvakumaran
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Posted: 1 decade ago May 8, 2012, 2:32 a.m. EDT
Hi Ivar,

Thanks for your reply. I tried to apply a global weak constraint on the model by assigning a average operator on the domain and then specifying the average of the stress component to be zero. But it does not work.
Hi Ivar, Thanks for your reply. I tried to apply a global weak constraint on the model by assigning a average operator on the domain and then specifying the average of the stress component to be zero. But it does not work.

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