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flow rule and hardening work in ottosen model

Posted 10 juil. 2019, 11:46 UTC−4 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 15 juil. 2019, 15:14 UTC−4
Henrik Sönnerlind COMSOL Employee

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Posted: 5 years ago 11 juil. 2019, 04:26 UTC−4
Updated: 5 years ago 11 juil. 2019, 04:25 UTC−4

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 12 juil. 2019, 15:07 UTC−4
Updated: 5 years ago 12 juil. 2019, 14:59 UTC−4

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 15 juil. 2019, 02:30 UTC−4
Updated: 5 years ago 15 juil. 2019, 02:27 UTC−4

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 15 juil. 2019, 15:14 UTC−4
Updated: 5 years ago 15 juil. 2019, 15:06 UTC−4

Thanks very much

Thanks very much

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