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flow rule and hardening work in ottosen model

Posted 2019年7月10日 GMT-4 上午11:46 Geomechanics, Structural Mechanics & Thermal Stresses 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 2019年7月15日 GMT-4 下午3:14
Henrik Sönnerlind COMSOL Employee

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Posted: 6 months ago 2019年7月11日 GMT-4 上午4:26
Updated: 6 months ago 2019年7月11日 GMT-4 上午4:25

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

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: 6 months ago 2019年7月12日 GMT-4 下午3:07
Updated: 6 months ago 2019年7月12日 GMT-4 下午2:59

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: 6 months ago 2019年7月15日 GMT-4 上午2:30
Updated: 6 months ago 2019年7月15日 GMT-4 上午2:27

Yes, that is correct.

Henrik

Yes, that is correct. Henrik
Horacio Nestor Fideleff
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Posted: 6 months ago 2019年7月15日 GMT-4 下午3:14
Updated: 6 months ago 2019年7月15日 GMT-4 下午3:06

Thanks very much

Thanks very much

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