Problems with the UMAT subroutine check_parms_DM of the SANISAND constitutive model - SoilModels

meng xiaowei|11.1.2020|Constitutive Modelling|3 |

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Where can I find the source of the content in the picture below in the UMAT subroutine check_parms_DM of the SANISAND constitutive model?

3 Comments

David Mašín 6 years ago

Hi Meng, it is here: https://soilmodels.com/download/plaxis-umat-sanisand/ in file implementation/umat.for. David

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  Meng Xiaowei 6 years ago
  
  thank you very much!,but my meaning is that where can I find related literature about explainning the formula of the above code.
  
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  - David Mašín 6 years ago
    
    I think this is simple switch allowing to define friction angle directly in degrees, or as M=q/p at failure. If below 5, the algorithm assumes that you entered M, if above 5 , the algorithm assumes you entered friction angle in degrees. This is just a technicality about how to input parameters, I do not think there is in any literature for it. David

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