Atomizer/hq/workspaces/manager/memory/2026-02-10.md

2026-02-10

Hydrotech Beam — KBS Sessions Received

• Antoine recorded 3 KBS capture sessions on his Windows machine (NX/Simcenter)
• Data location: /home/papa/ATODrive/Projects/hydrotech-beam/Hydrotech-Beam/_capture/
• Sessions: 20260210-132817 (6s), 20260210-161401 (38s), 20260210-163801 (414s main session)
• Main session is a full walkthrough of the NX model with parameter names, values, BCs, materials

New Information from KBS Sessions

• Beam length = 5,000 mm (beam_length expression)
• Cantilever: left fixed, right loaded with 10,000 kgf downward
• Hole span = 4,000 mm (p6), holes start/end 500mm from beam ends
• Mass via expression p1 (NOT p173 as we had) — starting 11.33 kg (CONTRADICTS 974 kg baseline!)
• Material: ANSI Steel 1005 — future: aluminum 6061, stainless ANSI 310
• Mesh: CQUAD4 thin shells, mid-surface idealization, element size = 67.4/2
• New expression names: beam_half_height, beam_half_width
• p6 (hole span) as potential new design variable
• 4 screenshot triggers in the session metadata

Actions Taken

• Posted acknowledgment + next steps in #project-hydrotech-beam
• Spawned Tech Lead sub-agent (label: tech-lead-kb-update) to:
  • Process all 3 transcripts
  • Update KB to Gen 002
  • Reconcile mass discrepancy (11.33 kg vs 974 kg)
  • Close resolved gaps (G1, G2, G5 partial, G8)
  • Update CONTEXT.md
  • Commit to Gitea

Workflow Status

• Step 1 (Optimizer strategy): OPTIMIZATION_STRATEGY.md exists as DRAFT from Feb 9
• Current: Processing new KB data before proceeding
• Next: Optimizer revises strategy with confirmed params → Auditor review → Study Builder code
• Model files confirmed synced: Beam.prt, Beam_fem1.fem, Beam_fem1_i.prt, Beam_sim1.sim

Completed

• Tech Lead completed KB Gen 002 update — commit b88657b
• Mass corrected AGAIN: 1,133.01 kg (p173), NOT 11.33 kg — Antoine corrected us
• Binary introspection of Beam.prt — extracted complete expression table (commit 15a457d)
• DV baselines are NOT round: face_thickness=21.504, core_thickness=25.162 (not 20/20)
• Gaps G12-G14 closed (beam_half_height=250, beam_half_width=150, holes_diameter expression confirmed)
• Important: beam_lenght has TYPO in NX (no 'h') — scripts must use exact spelling
• hole_count links to Pattern_p7 in the NX pattern feature
• CONTEXT.md updated with full expression map, pushed to Gitea

Pending — Waiting on Antoine

• Baseline re-run (G10, G11) — need current displacement and stress values
• Decision on p6 (hole span) — kept fixed at 4,000mm for now (Manager decision)

Windows Environment (dalidou)

• Path: C:\Users\antoi\Atomizer\projects\hydrotech-beam\ (Syncthing from server)
• Python: anaconda3\envs\atomizer (conda env named "atomizer")
• Antoine ran smoke test on Feb 11 — hit 2 bugs, both fixed (commit 135698d)
• NXOpen implementation still needed (solve, extract_displacement, extract_stress)

In Progress

• Optimization strategy updated with corrected baselines (commit 3e51804)
• Auditor review: APPROVED WITH CONDITIONS — 2 blockers found and fixed:
  • Hole spacing formula: span/(n-1) not span/(n+1) — fixed
  • Web height constraint: added 500 - 2*face - dia > 0 pre-check — fixed
  • Commit 94bff37
• Study Builder completed Phase 1 code (commit 017b90f) — verified end-to-end with stub solver
  • 6 files: run_doe.py, sampling.py, geometric_checks.py, nx_interface.py, requirements.txt, README.md
  • Pre-flight geometric filter catches ~24% of infeasible combos
  • NXOpen template ready — needs 3 methods filled in on Windows (solve, extract_disp, extract_stress)
• Antoine running baseline SOL 101 for displacement + stress (parallel)
• p6 kept fixed at 4,000mm for now (DEC by Manager)

NXOpenSolver → Existing Engine Integration (Late Evening)

• Antoine confirmed: runs everything from his "Honda atomizer" conda env on Windows
• Uses existing run_optimization.py which calls NXSolver + NXParameterUpdater + pyNastran extractors
• Key insight: We do NOT need to write NXOpen code from scratch — the Atomizer engine already has everything:
  • optimization_engine/nx/solver.py — journal-based solver via run_journal.exe
  • optimization_engine/nx/updater.py — expression updates via .exp import
  • optimization_engine/extractors/extract_displacement.py — pyNastran OP2
  • optimization_engine/extractors/extract_von_mises_stress.py — pyNastran OP2, kPa→MPa
  • optimization_engine/extractors/extract_mass_from_expression.py — from temp file
• Delegated to Study Builder (label: study-builder-nx-impl) to rewrite NXOpenSolver as a wrapper around existing engine
• Asked Antoine to confirm pyNastran is installed in the conda env

Infra Fixes

• Study Builder model was set to non-existent claude-sonnet-5 → fixed to claude-sonnet-4-20250514
• All agents were missing Anthropic API auth → propagated from Manager's auth-profiles.json
• Agents fixed: secretary, study-builder, optimizer, auditor, technical-lead

Study Builder Delivered — NXOpenSolver (commit 33180d6)

• Wraps existing Atomizer engine: NXParameterUpdater, NXSolver, pyNastran extractors
• HEEDS-style iteration folders, 600s timeout, CQUAD4 shell stress, kPa→MPa
• Full interface compatibility with run_doe.py preserved
• 252 additions, 126 deletions

Tech Lead Refined — NXOpenSolver v2 (commit 390ffed)

• Built on Study Builder's work with improvements:
  • Element type auto-detection (tries solids first, falls back to CQUAD4)
  • OP2 fallback path (solver result → expected naming convention)
  • Mass fallback via _temp_part_properties.json
  • Follows SAT3_Trajectory_V7 FEARunner pattern exactly
• Both commits stack cleanly on main, latest is the active version

Late Night — Antoine Follow-Up (~23:00-01:00 UTC)

• Antoine returned: "Yeah! What's next?" — confirmed ready to move forward
• Asked about conda env: confirmed he uses conda atomizer (defined in environment.yml at repo root)
  • Includes optuna, scipy, numpy, pandas, pyNastran — all Phase 1 deps covered
• Asked "What's the NXOpen implementation about?" — explained the 3 bridge methods (solve, extract_disp, extract_stress)
• Antoine asked how this relates to legacy Atomizer studies (SAT3, mirror blank)
  • Confirmed: same engine (NXSolver, NXParameterUpdater, pyNastran extractors)
  • Differences: geometric pre-filter, LHS sampling, cleaner separation, project-scoped
• Antoine approved: "go ahead and do it"
• Delegated NXOpen implementation completion to Technical Lead (label: hydrotech-nxopen-impl)
  • Task: complete NXOpenSolver.evaluate() using existing Atomizer engine components
  • Reference: SAT3_Trajectory_V7, bracket study, existing engine classes

Feb 11 Morning — Bug Fixes + Final Refactor

• Antoine tested on dalidou, hit 2 bugs:
  1. SQLite duplicate study name → fixed with load_if_exists=True + --clean flag
  2. Sampling crash with n-samples 1 → skip stratified patching when n < 11
  • Commit 135698d
• Full refactor of nx_interface.py (commit 126f0bb):
  • AtomizerNXSolver wraps existing optimization_engine (NXSolver + pyNastran extractors)
  • HEEDS-style iteration folders, .exp file generation, OP2 extraction
  • StubSolver improved with beam-theory approximations
  • Windows path confirmed: C:\Users\antoi\Atomizer\projects\hydrotech-beam\
  • Conda env: atomizer (all deps pre-installed)

Future Initiative — NX Simcenter 3D MCP (CEO request, Feb 11)

• MCP server on dalidou for direct NXOpen interaction
• Endpoints: expressions.list/get/set, model.update, solve.run, results.*, introspect, screenshots
• Eliminates pyNastran, temp files, journal generation — all via NXOpen API
• Target: Phase 2/3 roadmap
• Logged per Antoine's explicit request — not blocking current work

Next

• Antoine tests --backend nxopen on dalidou (single trial smoke test)
• Full 51-trial Phase 1 run
• Phase 2 TPE optimization