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specifying a global constraint on an internal variable

Posted 7 mai 2012, 03:46 UTC−4 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 8 mai 2012, 02:32 UTC−4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 7 mai 2012, 04:59 UTC−4
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 8 mai 2012, 02:32 UTC−4
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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