[CIG-SHORT] Pylith troubleshooting

[Brad Aagaard]

On 02/10/2015 04:48 PM, Marcello Gori wrote:
> Dear Brad,
>
> Exactly, you've centered the point: I am trying to model the wire explosion.
> I am investigating different initiations, and I'll consider also nucleation
> over larger portions of the surface, but smaller amplitudes.
>
> I will also try to impose a step-down normal traction bigger than the
> step-up (i.e. forcing the closure). Let me see what happens!
>
> I have already tried to set open_free_surface to False, and I do see some
> differences, but I prefer to leave it on True, as it doesn't change this
> issue (so far) and it's closer to the physical property I am trying to
> describe.
>
> Only one question, when it's set to True, does it zero ALL the tractions,
> included the imposed ones? Because I want to make sure that it keeps
> opening up to the normal traction level I'm imposing.
>
> Thanks a lot.
> Regards,
>
> -Marcello
>

When open_free_surface = True (default), the traction perturbation is 
NOT applied ONLY when the fault is open (fault normal slip > 0). When 
the slip in the fault normal direction is below the zero tolerance 
parameter (near zero), the traction perturbation is applied.

Regards,
Brad