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Atomizer/examples/bracket/bracket_sim1-solution_1.log
Anto01 96e88fe714 fix: Apply expression updates directly in NX journal 
Critical fix - the expressions were not being applied during optimization!
The journal now receives expression values and applies them using
EditExpressionWithUnits() BEFORE rebuilding geometry and regenerating FEM.

## Key Changes

### Expression Application in Journal (solve_simulation.py)
- Journal now accepts expression values as arguments (tip_thickness, support_angle)
- Applies expressions using EditExpressionWithUnits() on active Bracket part
- Calls MakeUpToDate() on each modified expression
- Then calls UpdateManager.DoUpdate() to rebuild geometry with new values
- Follows the exact pattern from the user's working journal

### NX Solver Updates (nx_solver.py)
- Added expression_updates parameter to run_simulation() and run_nx_simulation()
- Passes expression values to journal via sys.argv
- For bracket: passes tip_thickness and support_angle as separate args

### Test Script Updates (test_journal_optimization.py)
- Removed nx_updater step (no longer needed - expressions applied in journal)
- model_updater now just stores design vars in global variable
- simulation_runner passes expression_updates to nx_solver
- Sequential workflow: update vars -> run journal (apply expressions) -> extract results

## Results - OPTIMIZATION NOW WORKS!

Before (all trials same stress):
- Trial 0: tip=23.48, angle=37.21 → stress=197.89 MPa
- Trial 1: tip=20.08, angle=20.32 → stress=197.89 MPa (SAME!)
- Trial 2: tip=18.19, angle=35.23 → stress=197.89 MPa (SAME!)

After (varying stress values):
- Trial 0: tip=21.62, angle=30.15 → stress=192.71 MPa ✅
- Trial 1: tip=17.17, angle=33.52 → stress=167.96 MPa ✅ BEST!
- Trial 2: tip=15.06, angle=21.81 → stress=242.50 MPa ✅

Mesh also changes: 1027 → 951 CTETRA elements with different parameters.

The optimization loop is now fully functional with expressions being properly
applied and the FEM regenerating with correct geometry!

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-15 12:47:55 -05:00

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Simcenter Nastran 2412.0000 (Intel64 Family 6 Model 183 Stepping 1 Windows 10) Control File:
--------------------------------------------------------------------------------------
Nastran BUFFSIZE=32769 $(c:/program files/siemens/simcenter3d_2412/nxnastran/conf/nastran.rcf[1])
Nastran BUFFPOOL=20.0X $(c:/program files/siemens/simcenter3d_2412/nxnastran/conf/nastran.rcf[4])
Nastran DIAGA=128 DIAGB=0 $(c:/program files/siemens/simcenter3d_2412/nxnastran/conf/nastran.rcf[7])
Nastran REAL=8545370112 $(Memory limit for MPI and other specialized modules)
JID='C:\Users\antoi\Documents\Atomaste\Atomizer\examples\bracket\bracket_sim1-solution_1.dat'
OUT='./bracket_sim1-solution_1'
MEM=3846123520
MACH='Intel64 Family 6 Model 183 Stepping 1'
OPER='Windows 10'
OSV=' '
MODEL='Intel(R) Core(TM) i7-14700HX (AntoineThinkpad)'
CONFIG=8666
NPROC=28
symbol=DELDIR='c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/nast/del' $(program default)
symbol=DEMODIR='c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/nast/demo' $(program default)
symbol=SSSALTERDIR='c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/nast/misc/sssalter' $(program default)
symbol=TPLDIR='c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/nast/tpl' $(program default)
SDIR='c:/users/antoi/appdata/local/temp/bracket_sim1-solution_1.T88884_20'
DBS='c:/users/antoi/appdata/local/temp/bracket_sim1-solution_1.T88884_20'
SCR=yes
SMEM=20.0X
NEWDEL='c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl/SSS'
DEL='NXNDEF'
AUTH='29000@AntoineThinkpad'
AUTHQUE=0
MSGCAT='c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl/analysis.msg'
MSGDEST='f06'
PROG=bundle
NEWS='c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/nast/news.txt'
UMATLIB='libnxumat.dll'
UCRPLIB='libucreep.dll'
USOLLIB='libusol.dll'
--------------------------------------------------------------------------------------
NXN_ISHELLPATH=C:\Program Files\Siemens\Simcenter3D_2412\nxnastran\bin
NXN_JIDPATH=
PATH=c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl;c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl/sysnoise;c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl/softwareanalytics;c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl/samcef;c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl/impi/bin;c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl/monitor;C:\Program Files\Siemens\Simcenter3D_2412\nxbin;C:\Program Files\Siemens\Simcenter3D_2412\NXBIN;C:\Program Files\Siemens\NX2412\NXBIN;C:\Users\antoi\bin;C:\Program Files\Git\mingw64\bin;C:\Program Files\Git\usr\local\bin;C:\Program Files\Git\usr\bin;C:\Program Files\Git\usr\bin;C:\Program Files\Git\mingw64\bin;C:\Program Files\Git\usr\bin;C:\Users\antoi\bin;C:\Users\antoi\AppData\Local\Programs\cursor\resources\app\bin;C:\Program Files\Google\Chrome\Application;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program Files\dotnet;C:\Program Files (x86)\Microsoft SQL Server\160\Tools\Binn;C:\Program Files\Microsoft SQL Server\160\Tools\Binn;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn;C:\Program Files\Microsoft SQL Server\160\DTS\Binn;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit;C:\ProgramData\chocolatey\bin;C:\ProgramData\chocolatey\bin;C:\Program Files\Git\cmd;C:\Program Files\Git\usr\bin;C:\Program Files\MiKTeX\miktex\bin\x64\pdflatex.exe;C:\Strawberry\c\bin;C:\Strawberry\perl\site\bin;C:\Strawberry\perl\bin;C:\Program Files\Pandoc;C:\Program Files\Siemens\NX1980\CAPITALINTEGRATION\capitalnxremote;C:\Program Files\Tesseract-OCR;C:\Program Files\Inkscape\bin;C:\Program Files\Siemens\NX2412\CAPITALINTEGRATION\capitalnxremote;C:\Program Files\Tailscale;C:\Program Files\Siemens\NX2506\CAPITALINTEGRATION\capitalnxremote;C:\Program Files\Docker\Docker\resources\bin;C:\Users\antoi\.local\bin;C:\Users\antoi\AppData\Local\Microsoft\WindowsApps;C:\Users\antoi\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\antoi\AppData\Local\Programs\MiKTeX\miktex\bin\x64;C:\Users\antoi\AppData\Local\Pandoc;C:\Users\antoi\AppData\Local\Programs\Ollama;C:\Program Files\Graphviz\bin;C:\Users\antoi\.dotnet\tools;C:\Users\antoi\AppData\Local\Programs\cursor\resources\app\bin;C:\Program Files\Git\usr\bin\vendor_perl;C:\Program Files\Git\usr\bin\core_perl
Command Line: bracket_sim1-solution_1.dat prog=bundle old=no scratch=yes
Current Dir: C:\Users\antoi\Documents\Atomaste\Atomizer\examples\bracket
Executable: c:/program files/siemens/simcenter3d_2412/nxnastran/scnas/em64tntl/analysis.exe
NXN_MSG: stderr
--------------------------------------------------------------------------------------
Current resource limits:
Physical memory: 65208 MB
Physical memory available: 36826 MB
Paging file size: 83640 MB
Paging file size available: 34984 MB
Virtual memory: 134217727 MB
Virtual memory available: 134213557 MB
--------------------------------------------------------------------------------------
System configuration:
Hostname: AntoineThinkpad
Architecture: em64tnt
Platform: Intel64 Family 6 Model 183 Stepping 1 Windows 10
Model: Intel(R) Core(TM) i7-14700HX
Clock freq.: 2304 MHz
Number of CPUs: 28
Executable: standard
Raw model ID: 8666
Config number: 8666
Physical memory: 65208 MB
Virtual memory: 83640 MB
Numeric format: 64-bit little-endian IEEE.
Bytes per word: 8
Disk block size: 512 bytes (64 words)
Remote shell cmd: Remote capabilities not available.
--------------------------------------------------------------------------------------
Simcenter Nastran started Sat Nov 15 12:47:20 EST 2025
12:47:20 Beginning Analysis
12:47:20 Simcenter NASTRAN Authorization Information - System Attributes
12:47:20 --------------------------------------------------------
12:47:20 Model: Intel(R) Core(TM) i7-14700HX (An
12:47:20 Machine: Intel64 Family 6 Model 183 Stepp
12:47:20 OS: Windows 10
12:47:20 Version:
12:47:20 License File(s): 29000@AntoineThinkpad
12:47:20 app set license server to 29000@AntoineThinkpad
12:47:20 ************** License Server/File Information **************
Server/File : 29000@AntoineThinkpad
License File Sold To / Install : 10219284 - Atomaste
License File Webkey Access Code : S6C5JBSW94
License File Issuer : SIEMENS
License File Type : No Type
Flexera Daemon Version : 11.19
Vendor Daemon Version : 11.1 SALT v5.0.0.0
12:47:20 *************************************************************
12:47:20 **************** License Session Information ****************
Toolkit Version : 2.6.2.0
Server Setting Used : 29000@AntoineThinkpad
Server Setting Location : Application Specific Location.
Number of bundles in use : 0
12:47:20 *************************************************************
12:47:20 SALT_startLicensingSession: call count: 1
12:47:20 Simcenter NASTRAN Authorization Information - Checkout Successful
12:47:20 -----------------------------------------------------------------
12:47:20 License for module Simcenter Nastran Basic - NX Desktop (Bundle) checked out successfully
12:47:20 Analysis started.
12:47:20 Geometry access/verification to CAD part initiated (if needed).
12:47:20 Geometry access/verification to CAD part successfully completed (if needed).
12:47:20 Finite element model generation started.
12:47:21 Finite element model generated 10626 degrees of freedom.
12:47:21 Finite element model generation successfully completed.
12:47:21 Application of Loads and Boundary Conditions to the finite element model started.
12:47:21 Application of Loads and Boundary Conditions to the finite element model successfully completed.
12:47:21 Solution of the system equations for linear statics started.
12:47:21 Solution of the system equations for linear statics successfully completed.
12:47:21 Linear static analysis completed.
12:47:21 NSEXIT: EXIT(0)
12:47:21 SALT_term: Successful session call count: 0
12:47:21 Session has been terminated.
12:47:21 Analysis complete 0
Real: 0.814 seconds ( 0:00:00.814)
User: 0.250 seconds ( 0:00:00.250)
Sys: 0.140 seconds ( 0:00:00.140)
Simcenter Nastran finished Sat Nov 15 12:47:21 EST 2025
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