[Geoqus] On UTOL in SOIL TRANSIENT Analysis

[Tobias Lau]

Hello Bassamyam,

it's possible to avoid your problem. Just use a fixed time step (not to small,
you can check this with a formular in the Analyses Manual), that worked fine
with my soil step.

Cheers,
Tobias

Zitat von bsaad at po-box.mcgill.ca:

> Good day dears
> I am doing Consolidation nonlinear analysis (SOIL STEP. My analysis
> doesn't run unless I set up Max. Pore pressure change per increment to
> a high value (almost in the order of the applied load). I do not know
> if that affects the accuracy.. and how I can check that.?
>
> ABAQUS Doc says in the example  :Wicking in a partially saturated
> porous medium, quote "UTOL, the pore pressure tolerance that controls
> the automatic incrementation, is set to a large value since we expect
> the nonlinearity of the material to restrict the size of the time
> increments during the transient stages of the analysis and we do not
> wish to impose any further control on the accuracy of the time
> integration"
> Your comments about this issue, are greatly appreciated
> BASSAMYAM
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