[CIG-SHORT] Fault opening error

[Brad Aagaard]

Birendra,

Your solver tolerances need adjustment. The FaultCohesiveDyn object in a 
quasi-static simulation requires use of absolute tolerances in order to 
properly detect stick/slip with the iterative solver (see the friction 
session in the CDM2013 tutorial for details). You should lower the 
ksp_rtol and snes_rtol tolerances to 1.0e-20 to force use of the 
absolute tolerances.

Brad

On 8/2/13 2:35 PM, Birendra jha wrote:
> Hi everyone,
>
> I am trying to run a model with a fault (FaultCohesiveDyn) in it. The fault surface is not planar but is curved. I am getting fault opening error at some node, which stops the simulation. Why does this happen? What should I do to avoid getting this error?
>
> Please see the attached files which should run.
>
> Here is what I have tried so far:
> 1. different fault dips
> 2. different fault traces (plane to curved)
> 3. different fault friction coefficients
>
> My objective is to get some reverse slip on this curved fault surface. The slip does not have to be on the curved part, it can be on the part that strikes parallel to the y_pos boundary.
>
> Thank you very much for any help.
>
> Birendra
>
>
>
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