Plaxis 2D Tutorial 09

Sir I have Done Tutorial 09 - Stability of dam under rapid draw down by changing the dimensions of the base of core.

Actual base coordinates are (10,0) and (-10,0)

On a thought to know how the factor of safety changes by changing the core dimensions i have changed them to (15,0) and (-15,0).

But I can't get output. Intial phase (high reservoir) is not getting calculated.

I have attached the screenshot and data.success file of that error.

Please kindly look over my problem sir.

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  • Dear J. Usha Kranti,

    In your project we can see information about error in log info in Phases window:

    According to Reference manual, Appendix H, hint for error 34 is: 

    The groundwater flow calculation did not converge. Please check the input parameters and the phase settings.

    I know from experience that flow calculations are quite sensitive to mesh density. If you have big finite elements, you may have some calculation issues.

    In such cases I locally refine mesh in dam (embankment).
    For instance 0.5 in dam clusters:

    As a result Initial phase is successfully calculated:

Reply
  • Dear J. Usha Kranti,

    In your project we can see information about error in log info in Phases window:

    According to Reference manual, Appendix H, hint for error 34 is: 

    The groundwater flow calculation did not converge. Please check the input parameters and the phase settings.

    I know from experience that flow calculations are quite sensitive to mesh density. If you have big finite elements, you may have some calculation issues.

    In such cases I locally refine mesh in dam (embankment).
    For instance 0.5 in dam clusters:

    As a result Initial phase is successfully calculated:

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