[CIG-SHORT] Pylith question

[Matthew Knepley]

On Tue, Mar 28, 2017 at 11:17 PM, Xiaoxi Zhao <xiaoxiz at usc.edu> wrote:

> To whom it will concern,
>
> My name is Xiaoxi. I'm learning Pylith these days and trying to build a
> model with multiple layers and faults. The model is assigned gravity and
> initial stress equilibrium to gravity. Five surfaces are fixed with free
> ground surface. I expect the result to be zero displacement in the domain,
> however, there is some subsidence above the layers.
>

Why not just use an elastic prestep to get the correct initial stress
field? That is what it is for. Specifying the correct initial stresses can
be error prone.
And note that your spatial database would have to be accurate enough to
cancel all forces even if you gave the correct answer.

  Matt


> I'm not sure where the problem is. Can you please help me check the files
> and let me know if anything need to be changed to solve the problem
>
> Thanks for your time and help,
> Best regards,
> Xiaoxi
>
> --
> Sincerely,
>
> Xiaoxi Zhao
>
> Mork Family Dept, Petroleum Engineering
> USC Viterbi School of Engineering
> University of Southern California
>
> Los Angeles, CA 90089
> Tel: 213-447-6366
>
> xiaoxiz at usc.edu
>
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