[CIG-SHORT] How stress are calculated on the fault surface

[Charles Williams]

Hi Xiao,

The fault stresses are computed as part of the Lagrange multiplier fault formulation.  See Section 6.4 of the manual.

Cheers,
Charles


> On 18/12/2014, at 3:15 pm, Xiao Ma <xiaoma5 at illinois.edu> wrote:
> 
> Hi, 
> I am wondering how the stress are calculated on the fault surface  I know for Finite element the stress field in not usually computed on the boundaries of the grid, but at internal nodes and then extrapolated to compute the slip nodes Boundary conditions, is this approach used in Pylith ? And what is the order of accuracy is this approach?
> Thanks,
> Xiao
> 
> -- 
> -------------------------------------------------------------------------------------
> Xiao Ma
> Graduate Research Assistant
> PhD student in Structural Engineering
> University of Illinois at Urbana-Champaign
> E-mail: xiaoma5 at illinois.edu <mailto:xiaoma5 at illinois.edu>
> --------------------------------------------------------------------------------------
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Charles A. Williams
Scientist
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C.Williams at gns.cri.nz <mailto:C.Williams at gns.cri.nz>
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