Running Netfabb Simulation

Thermal analysis

To run the model, from a command line run

$ pan -b 07_thermal

The analysis progress is written to file 07_thermal.out. To check progress, run

$ tail 07_thermal.out

After the analysis completes, the last few lines of the output file 07_thermal.out should be similar to the following:

 inc = 29 time = 110026.96 iter = 1 eps = 0.12349E+04
 inc = 29 time = 110026.96 iter = 2 eps = 0.10048E-11
Finished writing file results\ 07_thermal_29.case
Finished writing file results\ 07_thermal_29_c.case
Writing record:          2, time: 110026.958120637
Increment end
CPU wall for increment 29 = 00:00:00.71, since start = 00:00:46.78
Layer end

Mesh preview volume  = 110852.789200311
Activated volume     = 110852.789200311
Activated percentage = 100.000000000000

Finished writing file .\07_thermal.case
Finished writing file .\07_thermal_c.case

Analysis completed

****************************
  1 Warning
****************************
****************************
  1 Critical warning
****************************

CPU wall for printing = 00:00:18.50
CPU wall = 00:00:46.86
CPU total = 00:01:37.65
Approximate single thread simulation time = 00:10:10.37

Peak RAM used for this process = 421,536 kB

END Autodesk AM Process Simulation

Actual CPU times will differ. The Warning indicates the simulation time needed to be adjusted.

The Critical Warning informs users that the CLI type support structures have been deprecated, and that STL type supports are suggested.

Quasi-static mechanical analysis

Run the first mechanical analysis from the command line:

$ pan -b 07_mechanical1

After the analysis completes, the last few lines of the output file 07_mechanical1.out should be similar to the following:

The warnings here are the same as given in the thermal log file.

Actual CPU times will differ. The warnings here are the same as given in the thermal log file.

Run the second mechanical analysis from the command line:

$ pan -b 07_mechanical2

After the analysis completes, the last few lines of the output file 07_mechanical2.out should be similar to the following:

---------------------------------
 Support structure removal time increment
------------------------------------------
 inc = 32 time =  260026.96   iter =    1 eps = 0.30045E+04
 inc = 32 time =  260026.96   iter =    2 eps = 0.23579E-08

Optimizing rigid body motion...
Initial RMS displacement          = 4.581710E-01
Optimized RMS displacement        = 4.024091E-01
Number of optimization iterations =     307
Rotation matrix =
   9.999939E-001   -7.807938E-005    3.501104E-003
   6.940198E-005    9.999969E-001    2.478531E-003
  -3.501287E-003   -2.478272E-003    9.999908E-001
Translation =    -8.833538E-002   -4.845236E-002   -4.549090E-001

Finished writing file results\ 07_mechanical2_32_f.case
Finished writing file results\ 07_mechanical2_32.case
Increment end
CPU wall for increment 32 = 00:00:01.71, since start = 00:01:10.61
Layer end

------------------------------------------------------
Total number of equilibrium iterations: 63

Mesh preview volume  =   110852.789200311
Activated volume     =   110852.789200311
Activated percentage =   100.000000000000

Signal tag AB9
*** CRITICAL WARNING: 3
 Code 1041
Recoater interference detected at three layer groups. Minimum clearance of -23.782 percent at 
percent at height 24.000 mm.

Finished writing file .\07_mechanical2_f.case
Finished writing file .\07_mechanical2.case

Analysis completed

****************************
  23 Warnings
****************************

****************************
  3 Critical warnings
****************************

CPU wall for support removal = 00:00:01.78
CPU wall = 00:01:10.68
Total thermal & mechanical simulation time = 00:01:57.54
Approximate single thread simulation time = 00:21:53.87


Peak RAM used for this process = 1,372,272 kB

END Autodesk AM Process Simulation

Each of the warnings note a support structure element failure. The warnings from the previous simulations are shown here as well, in addition to a Recoater Interference Critical Warning, along with several Recoater Interference Warnings and numerous support structure failure warnings.