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flow rule and hardening work in ottosen model

Posted Jul 10, 2019, 11:46 a.m. EDT Geomechanics, Structural Mechanics 4 Replies

Horacio Nestor Fideleff
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I am trying to model a piece of concrete and I need information about how the ottosen concrete model in comsol adopts yield surface, pastic flow and the work hardening; someone has information about this or where to look?

Thanks for all

4 Replies Last Post Jul 15, 2019, 3:14 p.m. EDT
Henrik Sönnerlind COMSOL Employee

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Posted: 5 years ago Jul 11, 2019, 4:26 a.m. EDT
Updated: 5 years ago Jul 11, 2019, 4:25 a.m. EDT

The Ottosen model does not include any hardening. The expression for the yield surface can be found in the theory section in the Structural Mechanics User's Guide. The flow rule is associated.

Regards,
Henrik

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Henrik Sönnerlind
COMSOL
The Ottosen model does not include any hardening. The expression for the yield surface can be found in the theory section in the Structural Mechanics User's Guide. The flow rule is associated. Regards, Henrik
Horacio Nestor Fideleff
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Posted: 5 years ago Jul 12, 2019, 3:07 p.m. EDT
Updated: 5 years ago Jul 12, 2019, 2:59 p.m. EDT

Thanks, Henrik, just one more question, the surface of failure coincides with the yield and there can be no tension state outside of it?

Thanks, Henrik, just one more question, the surface of failure coincides with the yield and there can be no tension state outside of it?
Henrik Sönnerlind COMSOL Employee

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Posted: 5 years ago Jul 15, 2019, 2:30 a.m. EDT
Updated: 5 years ago Jul 15, 2019, 2:27 a.m. EDT

Yes, that is correct.

Henrik

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Henrik Sönnerlind
COMSOL
Yes, that is correct. Henrik
Horacio Nestor Fideleff
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Posted: 5 years ago Jul 15, 2019, 3:14 p.m. EDT
Updated: 5 years ago Jul 15, 2019, 3:06 p.m. EDT

Thanks very much

Thanks very much

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