[CIG-SHORT] Pylith for Post Glacial Rebound

[Brad Aagaard]

Francisco,

PyLith does not include a Winkler element boundary condition. We chose 
not to implement it because using gravitational body forces with initial 
stresses can be used instead with fewer approximations.

Charles Williams is more familiar with this type of application for 
PyLith and can provide additional details. He may be out of the office 
at the moment, so he might not reply right away.

Regards,
Brad


On 07/22/2013 12:37 PM, Francisco Delgado De La Puente wrote:
> Hi, I was one of the atendees to the Pylith course about one month ago and
> I'm planning to use it to model post glacial rebound. However, as the PGR
> equation of motion is different than the usually equation of motion
> implemented in finite element packages, the boundary conditions must be
> modified in such a way that elastic springs ( Winkler foundation) must be
> attached to the free surface and the elastic-viscoelastic interface *(Wu,
> P. (2004), Using commercial finite element packages for the study of earth
> deformations, sea levels and the state of stress, Geophys. J. Int., 158,
> 401–408.) *So my question is the following, are does boundary conditions
> implemented in Pylith?? I have looked in the manual but the only thingg
> I've found springs are the for the physical analogy of the Maxwell
> viscoelastic model.
>
> Best regards
>
>
>
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