[CIG-SHORT] fault opening problem

Roby Douilly rdouilly at purdue.edu
Wed Nov 21 17:50:19 PST 2012


Thank you Brad. 
Sometimes it works but some other times I got the error depending on the initial fault tractions. 

Roby
On Nov 21, 2012, at 8:43 PM, Brad Aagaard wrote:

> Roby,
> 
> I was able to create a simple curved fault and it runs without any problems. However, I get similar errors as yours in a 3-D model but only at the ground surface where I have very low fault normal tractions. I will let you know if I am able to verify that there is a bug.
> 
> Brad
> 
> 
> On 11/21/2012 03:29 PM, Brad Aagaard wrote:
>> Roby,
>> 
>> It looks like there might be a bug related to nonplanar geometry and
>> fault slip causing opening when using explicit time stepping. I have not
>> yet been able to investigate this problem fully.
>> 
>> If you are building from source, a workaround is to remove the assert on
>> line 379 of libsrc/pylith/faults/FaultCohesiveDyn.cc:
>>   assert(fabs(tractionNormal) < _zeroTolerance);
>> 
>> You will still get the warning about fault opening but the code will run.
>> 
>> I will try to fix this ASAP but I will likely not be able to get it done
>> before AGU.
>> 
>> Regards,
>> Brad
>> 
>> 
>> 
> 




---------------------------------------------------------------------------------
Roby Douilly
Graduate Student 
Department of Earth, Atmospheric, and Planetary Sciences
Purdue University
550 Stadium Mall Dr.
West Lafayette, IN 47907-2051
rdouilly at purdue.edu




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