[CIG-SHORT] Initial stress conditions

[Brad Aagaard]

Eric,

You can examine the fault tractions to see if they are consistent 
between the case when you use BC and when you use an initial stress 
field. They should be the same if everything is setup consistently. This 
is what I have done for the SCEC dynamic spontaneous rupture benchmarks 
where I needed an initial stress field over the domain for an 
elastoplastic rheology.

Regards,
Brad


On 11/06/2013 01:22 PM, Eric Lindsey wrote:
> It seems I don't understand what the initial stress conditions imposed by
>
> [pylithapp.timedependent.materials.elastic]
> db_initial_stress
>
> are doing. I've got a dynamic fault with static friction that will slip
> when I impose Dirichlet or Neumann BC that introduce a large enough shear
> stress (I took most of the configuration from examples/3d/hex8/step11.cfg),
> but if I impose these initial stresses instead of the extra boundary
> conditions, I get no slip! What's going on here - am I misunderstanding the
> purpose of initial stress?
>
> Thanks,
> Eric
>
>
>
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