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flow rule and hardening work in ottosen model

Posted 10.07.2019, 11:46 GMT-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 15.07.2019, 15:14 GMT-4
Henrik Sönnerlind COMSOL Employee

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Posted: 5 years ago 11.07.2019, 04:26 GMT-4
Updated: 5 years ago 11.07.2019, 04:25 GMT-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 12.07.2019, 15:07 GMT-4
Updated: 5 years ago 12.07.2019, 14:59 GMT-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 15.07.2019, 02:30 GMT-4
Updated: 5 years ago 15.07.2019, 02:27 GMT-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 15.07.2019, 15:14 GMT-4
Updated: 5 years ago 15.07.2019, 15:06 GMT-4

Thanks very much

Thanks very much

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