Constitutive models
 
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Constitutive models

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(@vjagodnik)
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Joined: 11 months ago
Posts: 6
Topic starter  

Is there an idea to open a part of forum regarding constitutive models and their implementation to GeoXPM?


   
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Tien Nguyen (Smith)
(@tienlk2004)
Member Admin
Joined: 2 years ago
Posts: 35
 

Hi @vjagodnik

Thanks for the suggestion. I think it's a good idea. I have opened the 'Constitutive models' section.


   
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(@pietro-mazzuca)
Active Member
Joined: 10 months ago
Posts: 4
 

Dear sirs,

I would like to have further details about the parameters governing the Drucker-Prager with softening. What the parameters "a" and "b" represent? In addition, which is the softening law implemented in the software?


   
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Tien Nguyen (Smith)
(@tienlk2004)
Member Admin
Joined: 2 years ago
Posts: 35
 

@pietro-mazzuca 

Please find a description of the Drucker-Prager softening model in this paper:
https://infoscience.epfl.ch/record/282882/files/2020_ALERT_school.pdf%23page%3D9&source=gmail&ust=1690426081466000&usg=AOvVaw1S6hyWZS5ZtE8u9FVT24i W">Bui, H. H., & Nguyen, G. D. (2020). Smoothed particle hydrodynamics (SPH) and its applications in geomechanics. ALERT Doctoral School 2020 Point based numerical methods in geomechanics, 3.

   
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 alrm
(@alrm)
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Joined: 11 months ago
Posts: 6
 

Hello,
Do you have any template for user-defined constituive model?

Regards,
A


   
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Tien Nguyen (Smith)
(@tienlk2004)
Member Admin
Joined: 2 years ago
Posts: 35
 

@alrm You can find the template on the Examples page for the User-defined Constitutive Model https://geoxpm.com/materials/

It's this one https://geoxpm.com/wp-content/uploads/2023/06/GeoXPM-User-defined-Constitutive-Model-Template.zip

 


   
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pipiqiu311
(@pipiqiu311)
Active Member
Joined: 2 months ago
Posts: 4
 

@tienlk2004

I would like to have further details about the parameters governing the Drucker-Prager with softening.What is the relationship between parameters "a" and "b" and the softening coefficient?


   
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Tien Nguyen (Smith)
(@tienlk2004)
Member Admin
Joined: 2 years ago
Posts: 35
 

@pipiqiu311 see #post-54 https://geoxpm.com/community/general/constitutive-models/#post-54 . Equation (59)

 


   
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