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calculix / CalculiX-Examples

CalculiX examples by Prof. Martin Kraska from Brandenburg University of Applied Sciences. Excellent starting point to master parametric modelling with CGX and CCX.
MIT License
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CGX crash with swep #13

Closed mkraska closed 7 years ago

mkraska commented 7 years ago

This code crashes CGX 2.12 with elemChecker.c enabled (should that matter here? No elements generated so far)

valu ri 10
seto ind
  pnt pk0 0 0 0
  pnt pkx ri 0 0
  pnt pky 0 ri 0
  pnt pkz 0 0 ri
  #line lxy pkx pky pk0 8
  #line lyz pky pkz pk0 8
  line lzx pkz pkx pk0 8
  swep ind inds rot z 90 10 n

This is part of the CGX output

bug.fbd opened
 reading file
   #line lxy pkx pky pk0 8
   #line lyz pky pkz pk0 8
X: 0.000000 Y: 0.000000 Z: 10.000000
X: 1.950903 Y: 0.000000 Z: 9.807853
X: 3.826834 Y: 0.000000 Z: 9.238795
X: 5.555702 Y: 0.000000 Z: 8.314696
X: 7.071068 Y: 0.000000 Z: 7.071068
X: 8.314696 Y: 0.000000 Z: 5.555702
X: 9.238795 Y: 0.000000 Z: 3.826834
X: 9.807853 Y: 0.000000 Z: 1.950903
X: 10.000000 Y: 0.000000 Z: 0.000000
fitting B-Spline...BSpline fitting ... done
Error: 0.00131488 after 12-iterations
 --> Done
N001 DEFINE COMPACT 3 2 11 9 15 12
*** buffer overflow detected ***: /home/user/A_Inst_Calculix/CalculiX/cgx_2.12/src/cgx terminated
mkraska commented 7 years ago

bugfix by Pascal Mossier (author of the cgx code for the new option -n):

I corrected both bugs with minor changes in the source files:

copyEntity.c uselibSNL.cpp

With the altered files, the test case worked, and the goemetry could be meshed with tr3. Tr6u failed due to ambigious points.

cgx sweping issue.zip