• Registered: 17-07-2007
  • Posts: 13

Topic: Problems using Extractor in new module

Hi Dr. Patzak,

I'm having problems using the extractor with a new module I've added to OOFEM. I can extract values from the nodes but can't get results from element Gauss Points. In this new module each Gauss Point has a state vector, stress vector and strain vector. For whatever reason I can't seem to extract values from any of the three vectors. The error message just says "Error in processing rule 4".

I've attached a sample text file that contains my output file, extractor file for nodes (which works) and extractor file for elements (which doesn't work). Could you possibly have a look at them and tell me what's going wrong? Note that I'm working with the extractor from OOFEM version 1.8.


Many thanks,

Doug

2 Reply by bp

  • bp
  • Administrator
  • Offline
  • From: Prague, Czech Rep.
  • Registered: 02-03-2007
  • Posts: 1,047

Re: Problems using Extractor in new module

Hi Doug,

the problem is that the output of your out file (element and particularly GP records) does not match the pattern that extractor form 1.8 expects. You have two options: migrate to 1.9 and use new extractor.py, which is more general and should accept the modifications you have made. Or you have to adjust the output at GP level, so that the general format expected by extracor(1.8) is preserved. The GP record should look like this (for 1.8):

element 80 :
  GP 1 :  strains  -3.4353e-06  2.3793e-07  0.0000e+00  0.0000e+00  0.0000e+00 -5.1009e-06
          stresses -7.0577e-02 -9.3567e-03  0.0000e+00  0.0000e+00  0.0000e+00 -4.2508e-02
          status { your GP data here}

Borek

bp's Website

  • Registered: 02-03-2010
  • Posts: 6

Re: Problems using Extractor in new module

I am looking for this for a long time know finally i found this.. Thanks for dicussion and help keep helping us!