From 9541958eae2d3e204e1dacfc22b1ce36d39d3002 Mon Sep 17 00:00:00 2001 From: Antoine Date: Mon, 9 Feb 2026 02:18:14 +0000 Subject: [PATCH] =?UTF-8?q?Restructure=20Hydrotech=20Beam=20project=20?= =?UTF-8?q?=E2=80=94=20KB-integrated=20layout?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit New project structure with knowledge base integration: - kb/ with components, materials, fea, dev generations - models/ for reference NX files (golden copies) - studies/ for self-contained optimization campaigns - deliverables/ for final outputs - DECISIONS.md decision log (6 decisions tracked) - BREAKDOWN.md (moved from 1_breakdown/) - Gen 001 created from intake + technical breakdown KB extension file: atomizer/shared/skills/knowledge-base-atomizer-ext.md Refs: DEC-HB-004, DEC-HB-005, DEC-HB-006 --- .../TECHNICAL_BREAKDOWN.md => BREAKDOWN.md} | 0 projects/hydrotech-beam/DECISIONS.md | 47 ++++++++++++ projects/hydrotech-beam/README.md | 72 +++++++++++++++++++ projects/hydrotech-beam/deliverables/.gitkeep | 0 .../hydrotech-beam/images/components/.gitkeep | 0 .../hydrotech-beam/images/studies/.gitkeep | 0 projects/hydrotech-beam/kb/_history.md | 22 ++++++ projects/hydrotech-beam/kb/_index.md | 47 ++++++++++++ .../kb/components/sandwich-beam.md | 52 ++++++++++++++ projects/hydrotech-beam/kb/dev/gen-001.md | 58 +++++++++++++++ .../hydrotech-beam/kb/fea/load-cases/.gitkeep | 0 .../kb/fea/models/sol101-static.md | 46 ++++++++++++ .../hydrotech-beam/kb/fea/results/.gitkeep | 0 .../hydrotech-beam/kb/materials/steel-aisi.md | 26 +++++++ projects/hydrotech-beam/models/README.md | 23 ++++++ projects/hydrotech-beam/studies/.gitkeep | 0 16 files changed, 393 insertions(+) rename projects/hydrotech-beam/{1_breakdown/TECHNICAL_BREAKDOWN.md => BREAKDOWN.md} (100%) create mode 100644 projects/hydrotech-beam/DECISIONS.md create mode 100644 projects/hydrotech-beam/README.md create mode 100644 projects/hydrotech-beam/deliverables/.gitkeep create mode 100644 projects/hydrotech-beam/images/components/.gitkeep create mode 100644 projects/hydrotech-beam/images/studies/.gitkeep create mode 100644 projects/hydrotech-beam/kb/_history.md create mode 100644 projects/hydrotech-beam/kb/_index.md create mode 100644 projects/hydrotech-beam/kb/components/sandwich-beam.md create mode 100644 projects/hydrotech-beam/kb/dev/gen-001.md create mode 100644 projects/hydrotech-beam/kb/fea/load-cases/.gitkeep create mode 100644 projects/hydrotech-beam/kb/fea/models/sol101-static.md create mode 100644 projects/hydrotech-beam/kb/fea/results/.gitkeep create mode 100644 projects/hydrotech-beam/kb/materials/steel-aisi.md create mode 100644 projects/hydrotech-beam/models/README.md create mode 100644 projects/hydrotech-beam/studies/.gitkeep diff --git a/projects/hydrotech-beam/1_breakdown/TECHNICAL_BREAKDOWN.md b/projects/hydrotech-beam/BREAKDOWN.md similarity index 100% rename from projects/hydrotech-beam/1_breakdown/TECHNICAL_BREAKDOWN.md rename to projects/hydrotech-beam/BREAKDOWN.md diff --git a/projects/hydrotech-beam/DECISIONS.md b/projects/hydrotech-beam/DECISIONS.md new file mode 100644 index 00000000..5801543b --- /dev/null +++ b/projects/hydrotech-beam/DECISIONS.md @@ -0,0 +1,47 @@ +# DECISIONS.md — Hydrotech Beam + +Numbered decision log. Check here before proposing anything that contradicts a prior decision. + +--- + +## DEC-HB-001: Single-objective formulation +- **Date:** 2026-02-08 +- **By:** Technical Lead 🔧 +- **Decision:** Minimize mass as sole objective. Tip displacement (≤ 10 mm) and von Mises stress (≤ 130 MPa) as hard constraints. +- **Rationale:** Mass is Antoine's clear priority. Displacement and stress are pass/fail limits, not competing objectives to trade off. Single-objective converges faster and is appropriate for 4 design variables. +- **Status:** Proposed — awaiting CEO confirmation + +## DEC-HB-002: Two-phase optimization strategy +- **Date:** 2026-02-08 +- **By:** Technical Lead 🔧 +- **Decision:** Phase 1 = Latin Hypercube DoE (40–50 trials) to map landscape. Phase 2 = TPE via Optuna (60–100 trials) to converge. +- **Rationale:** DoE first catches model failures, maps feasibility, reveals sensitivities. TPE handles mixed integer/continuous natively and is sample-efficient. +- **Status:** Proposed — awaiting CEO confirmation + +## DEC-HB-003: Integer handling for hole_count +- **Date:** 2026-02-08 +- **By:** Technical Lead 🔧 +- **Decision:** Treat `hole_count` as true integer throughout (not continuous + rounding). +- **Rationale:** Only 11 levels (5–15). NX model must rebuild with integer count anyway. TPE handles mixed types natively. +- **Status:** Proposed — awaiting CEO confirmation + +## DEC-HB-004: Project structure — KB-integrated layout +- **Date:** 2026-02-09 +- **By:** Manager 🎯 + CEO +- **Decision:** Projects use KB-integrated structure with `models/`, `kb/`, `studies/`, `deliverables/`. Knowledge base follows accumulation principle from shared KB skill. Studies are self-contained with own model copy and introspection. +- **Rationale:** Centralizes project knowledge, supports multiple studies per project, enables CDR compilation from KB, keeps everything in Gitea. +- **Status:** Approved + +## DEC-HB-005: No Notion — Gitea + .md as source of truth +- **Date:** 2026-02-09 +- **By:** CEO +- **Decision:** All project documentation lives as .md files in the Atomizer Gitea repo. No external project management tools. +- **Rationale:** CEO preference. Efficient, version-controlled, browseable on Gitea, accessible to all agents. +- **Status:** Approved + +## DEC-HB-006: KB skill — extension pattern, no fork +- **Date:** 2026-02-09 +- **By:** Manager 🎯 + CEO +- **Decision:** Use Mario's shared knowledge-base skill as-is. Atomizer maintains an extension file (`knowledge-base-atomizer-ext.md`) for agent-specific workflows. No fork of the shared repo. +- **Rationale:** Avoids merge conflicts, gets upstream improvements automatically, clean separation between general toolbox and Atomizer playbook. +- **Status:** Approved diff --git a/projects/hydrotech-beam/README.md b/projects/hydrotech-beam/README.md new file mode 100644 index 00000000..4bfcd4c4 --- /dev/null +++ b/projects/hydrotech-beam/README.md @@ -0,0 +1,72 @@ +# Hydrotech Beam — Structural Optimization + +**Client:** Hydrotech (internal test fixture) +**Channel:** #project-hydrotech-beam +**Created:** 2026-02-08 +**Status:** Technical Breakdown Complete — Awaiting Gap Resolution + +--- + +## Objective + +Optimize a sandwich I-beam with lightening holes: minimize mass while meeting stiffness and strength constraints. + +## Key Numbers + +| Metric | Baseline | Target | +|--------|----------|--------| +| Mass | ~974 kg | Minimize | +| Tip displacement | ~22 mm | ≤ 10 mm | +| Von Mises stress | TBD | ≤ 130 MPa | + +## Design Variables + +| Variable | Range | Type | +|----------|-------|------| +| Half-core thickness | 10–40 mm | Continuous | +| Face thickness | 10–40 mm | Continuous | +| Hole diameter | 150–450 mm | Continuous | +| Hole count | 5–15 | Integer | + +## Approach + +Two-phase optimization: +1. **DoE** (LHS, 40–50 trials) — map the landscape +2. **TPE** (Bayesian, 60–100 trials) — converge to optimum + +Total budget: ~100–150 NX evaluations, est. 2–5 hours compute. + +## Project Structure + +``` +hydrotech-beam/ +├── README.md ← You are here +├── CONTEXT.md # Intake requirements +├── BREAKDOWN.md # Technical analysis +├── DECISIONS.md # Decision log +├── models/ # Reference NX models (golden copies) +├── kb/ # Living knowledge base +│ ├── components/ # Per-component knowledge +│ ├── materials/ # Material data +│ ├── fea/ # FEA model knowledge +│ └── dev/ # Generation documents +├── images/ # Screenshots, plots, renders +├── studies/ # Optimization campaigns +│ └── 01_doe_landscape/ # (first study — pending) +└── deliverables/ # Final reports and recommendations +``` + +## Key Documents + +- [CONTEXT.md](CONTEXT.md) — Full intake data +- [BREAKDOWN.md](BREAKDOWN.md) — Tech Lead's technical analysis +- [DECISIONS.md](DECISIONS.md) — All project decisions +- [kb/_index.md](kb/_index.md) — Knowledge base overview + +## Team + +| Role | Agent | Status | +|------|-------|--------| +| Manager | 🎯 Manager | Coordinating | +| Technical Lead | 🔧 Tech Lead | Breakdown complete | +| CEO | Antoine | Gap resolution pending | diff --git a/projects/hydrotech-beam/deliverables/.gitkeep b/projects/hydrotech-beam/deliverables/.gitkeep new file mode 100644 index 00000000..e69de29b diff --git a/projects/hydrotech-beam/images/components/.gitkeep b/projects/hydrotech-beam/images/components/.gitkeep new file mode 100644 index 00000000..e69de29b diff --git a/projects/hydrotech-beam/images/studies/.gitkeep b/projects/hydrotech-beam/images/studies/.gitkeep new file mode 100644 index 00000000..e69de29b diff --git a/projects/hydrotech-beam/kb/_history.md b/projects/hydrotech-beam/kb/_history.md new file mode 100644 index 00000000..40adbbd4 --- /dev/null +++ b/projects/hydrotech-beam/kb/_history.md @@ -0,0 +1,22 @@ +# Knowledge Base History — Hydrotech Beam + +All modifications tracked by generation. + +--- + +## Gen 001 — 2026-02-09 — Initial KB + +**Source:** Project intake (CONTEXT.md) + Technical Lead breakdown (BREAKDOWN.md) +**Author:** Manager 🎯 + +**Created:** +- `components/sandwich-beam.md` — initial component file from intake data +- `materials/steel-aisi.md` — material placeholder +- `fea/models/sol101-static.md` — FEA model placeholder from breakdown +- `dev/gen-001.md` — generation document + +**Key findings from breakdown:** +- Baseline FAILS displacement constraint (22 mm vs 10 mm limit) +- Feasible region may be narrow — stiffness and mass compete +- Sandwich effect (core thickness) is the primary stiffness lever +- 9 gaps identified requiring CEO input before proceeding diff --git a/projects/hydrotech-beam/kb/_index.md b/projects/hydrotech-beam/kb/_index.md new file mode 100644 index 00000000..d4af7131 --- /dev/null +++ b/projects/hydrotech-beam/kb/_index.md @@ -0,0 +1,47 @@ +# Knowledge Base — Hydrotech Beam + +**Project:** Hydrotech Beam Structural Optimization +**Generation:** 001 +**Last updated:** 2026-02-09 + +--- + +## Overview + +Sandwich I-beam optimization for a test fixture. Steel construction with lightening holes in the web. Goal: reduce mass from ~974 kg while meeting displacement (≤ 10 mm) and stress (≤ 130 MPa) constraints. + +## Components + +| Component | File | Status | +|-----------|------|--------| +| Sandwich Beam | [sandwich-beam.md](components/sandwich-beam.md) | Initial | + +## Materials + +| Material | File | Status | +|----------|------|--------| +| Steel (AISI) | [steel-aisi.md](materials/steel-aisi.md) | Initial | + +## FEA + +| Model | File | Status | +|-------|------|--------| +| Static Analysis (SOL 101) | [fea/models/sol101-static.md](fea/models/sol101-static.md) | Pending gap resolution | + +## Generations + +| Gen | Date | Summary | +|-----|------|---------| +| 001 | 2026-02-09 | Initial KB from intake + technical breakdown | + +## Open Tasks + +- ❓ G1: Beam length and support conditions +- ❓ G2: Loading definition (point? distributed? self-weight?) +- ❓ G3: Displacement measurement location and DOF +- ❓ G4: Stress constraint scope (whole model? exclude supports?) +- ❓ G5: Geometric feasibility of hole patterns at extremes +- ❓ G6: Result sensors in Beam_sim1.sim +- ❓ G7: NX parametric rebuild reliability across full range +- ❓ G8: Mesh type, density, convergence status +- ❓ G9: 130 MPa stress limit basis (yield? safety factor?) diff --git a/projects/hydrotech-beam/kb/components/sandwich-beam.md b/projects/hydrotech-beam/kb/components/sandwich-beam.md new file mode 100644 index 00000000..bdbbaae3 --- /dev/null +++ b/projects/hydrotech-beam/kb/components/sandwich-beam.md @@ -0,0 +1,52 @@ +# Sandwich Beam + +**Type:** Primary structural component +**Material:** Steel (AISI) — see [steel-aisi.md](../materials/steel-aisi.md) +**Status:** Baseline documented, optimization pending + +--- + +## Description + +Sandwich I-beam serving as primary load-bearing member in a test fixture assembly. Cross-section features a core layer flanked by face sheets on top and bottom flanges. Web contains a pattern of lightening holes (circular cutouts) to reduce mass. + +## Specifications + +| Parameter | Value | Units | Source | +|-----------|-------|-------|--------| +| Mass (baseline) | ~974 | kg | NX expression `p173` | +| Tip displacement (baseline) | ~22 | mm | SOL 101 result | +| Half-core thickness | 20 (baseline) | mm | DV range: 10–40 | +| Face thickness | 20 (baseline) | mm | DV range: 10–40 | +| Hole diameter | 300 (baseline) | mm | DV range: 150–450 | +| Hole count | 10 (baseline) | — | DV range: 5–15 (integer) | +| Beam length | ❓ TBD | mm | Gap G1 | +| Support conditions | ❓ TBD | — | Gap G1 | + +## Structural Behavior + +*From Technical Breakdown (Gen 001):* + +The beam is **bending-dominated**: + +| Behavior | Governing Parameters | Notes | +|----------|---------------------|-------| +| Bending stiffness (EI) | Face thickness, core thickness | Faces carry bending stress, core carries shear. Stiffness scales ~quadratically with distance from neutral axis | +| Mass | All four variables | Core and face add material; holes remove material from web | +| Stress concentrations | Hole diameter, hole spacing | Larger holes → higher SCF at edges. Closely spaced holes can interact | +| Shear capacity | Core thickness, hole count, diameter | Holes reduce shear-carrying area | + +## Design Variable Interactions + +1. **Core × Face** — classic sandwich interaction. Optimal stiffness balances core depth (lever arm) vs face material (bending resistance) +2. **Hole diameter × Hole count** — both remove web material. Large + many could leave insufficient ligament width +3. **Face × Hole diameter** — thicker faces reduce nominal stress, allowing larger holes +4. **Core × Hole diameter** — core thickness determines web height, constrains max feasible hole diameter + +## Key Risk + +> ⚠️ Baseline FAILS displacement constraint (22 mm vs 10 mm target). Optimizer must increase stiffness by >50% while reducing mass. Feasible region may be tight. + +## History + +- **Gen 001** (2026-02-09): Initial documentation from intake + technical breakdown diff --git a/projects/hydrotech-beam/kb/dev/gen-001.md b/projects/hydrotech-beam/kb/dev/gen-001.md new file mode 100644 index 00000000..ac818456 --- /dev/null +++ b/projects/hydrotech-beam/kb/dev/gen-001.md @@ -0,0 +1,58 @@ +# Gen 001 — Project Intake + Technical Breakdown + +**Date:** 2026-02-09 +**Sources:** CEO intake in #project-hydrotech-beam, Technical Lead analysis +**Author:** Manager 🎯 + +--- + +## What Happened + +1. Antoine submitted the Hydrotech beam optimization request via #project-hydrotech-beam +2. Manager created project folder and CONTEXT.md from intake data +3. Technical Lead produced a full technical breakdown (BREAKDOWN.md) +4. Manager and CEO agreed on project structure (KB-integrated layout) + +## Key Findings + +### From Intake +- Sandwich I-beam, steel, with lightening holes in web +- 4 design variables (3 continuous + 1 integer) +- Current design: ~974 kg, ~22 mm tip displacement +- Targets: minimize mass, displacement ≤ 10 mm, stress ≤ 130 MPa + +### From Technical Breakdown +- **Critical:** Baseline already violates displacement constraint (22 mm vs 10 mm) +- Single-objective formulation recommended (minimize mass, constrain the rest) +- Two-phase approach: DoE (40–50 trials) then TPE (60–100 trials) +- Significant variable interactions expected (sandwich theory, hole interactions) +- 9 gaps identified needing CEO input +- Overall risk: MEDIUM-HIGH (feasible region may be tight or empty) + +## KB Entries Created + +- `components/sandwich-beam.md` — component file with specs, behavior, interactions +- `materials/steel-aisi.md` — placeholder, needs NX model data +- `fea/models/sol101-static.md` — solver setup, pending gap resolution + +## Decisions Made + +- DEC-HB-004: KB-integrated project structure (Approved) +- DEC-HB-005: No Notion, Gitea + .md only (Approved) +- DEC-HB-006: KB skill extension pattern, no fork (Approved) + +## Open Items + +9 gaps pending CEO input (see [_index.md](../_index.md)): +- G1–G2: Geometry and loading (most critical) +- G3–G4: Result extraction specifics +- G5: Geometric feasibility at extremes +- G6–G8: NX model details +- G9: Stress allowable basis + +## Next Steps + +1. Resolve gaps G1–G9 with Antoine +2. Upload reference models to `models/` +3. Begin NX model introspection +4. Set up first study (DoE) diff --git a/projects/hydrotech-beam/kb/fea/load-cases/.gitkeep b/projects/hydrotech-beam/kb/fea/load-cases/.gitkeep new file mode 100644 index 00000000..e69de29b diff --git a/projects/hydrotech-beam/kb/fea/models/sol101-static.md b/projects/hydrotech-beam/kb/fea/models/sol101-static.md new file mode 100644 index 00000000..002cb786 --- /dev/null +++ b/projects/hydrotech-beam/kb/fea/models/sol101-static.md @@ -0,0 +1,46 @@ +# SOL 101 — Static Analysis + +**Simulation:** Beam_sim1.sim +**Solver:** NX Nastran SOL 101 (Linear Static) +**Status:** Pending gap resolution + +--- + +## Setup + +| Item | Value | Notes | +|------|-------|-------| +| Solution type | SOL 101 (Linear Static) | Appropriate for this problem | +| Element type | ❓ TBD | Gap G8: CQUAD4/CQUAD8 (shell) or CTETRA/CHEXA (solid)? | +| Mesh density | ❓ TBD | Gap G8: convergence checked? | +| Loading | ❓ TBD | Gap G2: point load? distributed? self-weight? | +| BCs | ❓ TBD | Gap G1: cantilever? simply-supported? | + +## Result Extraction + +| Output | Method | Expression/Sensor | Status | +|--------|--------|-------------------|--------| +| Mass | NX expression | `p173` | ✅ Known | +| Tip displacement | ❓ Sensor or .f06 parse | TBD | Gap G3, G6 | +| Von Mises stress | ❓ Sensor or .f06 parse | TBD | Gap G4, G6 | + +## Solver Considerations + +*From Technical Breakdown:* + +- **Linear assumption:** 22 mm displacement on likely 2+ m beam → L/δ probably OK. Verify. +- **Mesh sensitivity:** Stress at hole edges is mesh-dependent. Need convergence check (Gap G8). +- **Mesh morphing vs remesh:** Parametric NX models typically remesh on update. Need to confirm behavior across DV range (Gap G7). +- **Runtime estimate:** Single beam, ~10K–100K DOF → probably seconds to low minutes per evaluation. + +## Validation Checklist + +- [ ] Baseline mass matches NX expression `p173` +- [ ] Baseline displacement matches reported ~22 mm +- [ ] Mesh convergence verified at baseline +- [ ] Mesh quality acceptable at DV range extremes +- [ ] Model rebuilds cleanly at all 4 corners of design space + +## History + +- **Gen 001** (2026-02-09): Initial documentation from technical breakdown. All solver details pending gap resolution. diff --git a/projects/hydrotech-beam/kb/fea/results/.gitkeep b/projects/hydrotech-beam/kb/fea/results/.gitkeep new file mode 100644 index 00000000..e69de29b diff --git a/projects/hydrotech-beam/kb/materials/steel-aisi.md b/projects/hydrotech-beam/kb/materials/steel-aisi.md new file mode 100644 index 00000000..4d729d35 --- /dev/null +++ b/projects/hydrotech-beam/kb/materials/steel-aisi.md @@ -0,0 +1,26 @@ +# Steel (AISI) + +**Status:** Placeholder — needs full material card details + +--- + +## Properties + +| Property | Value | Units | Source | +|----------|-------|-------|--------| +| Standard | AISI | — | Intake | +| Grade | ❓ TBD | — | Need from NX model | +| Yield strength | ❓ TBD | MPa | — | +| E (Young's modulus) | ❓ TBD | GPa | — | +| Density | ❓ TBD | kg/m³ | — | +| Poisson's ratio | ❓ TBD | — | — | + +## Notes + +- Stress allowable of 130 MPa was given as constraint — need to confirm basis (Gap G9) +- If yield is ~250 MPa, then 130 MPa implies SF ≈ 1.9 — conservative +- Material card should be extracted from NX model during introspection + +## History + +- **Gen 001** (2026-02-09): Placeholder from intake — "Steel (AISI)" is all we have diff --git a/projects/hydrotech-beam/models/README.md b/projects/hydrotech-beam/models/README.md new file mode 100644 index 00000000..354d8193 --- /dev/null +++ b/projects/hydrotech-beam/models/README.md @@ -0,0 +1,23 @@ +# Reference Models — Hydrotech Beam + +Golden copies of the NX model files. **Do not modify these directly.** + +Studies should copy these to their own `model/` folder and modify there. + +## Files + +| File | Description | Status | +|------|-------------|--------| +| `Beam.prt` | NX CAD part — sandwich I-beam with lightening holes | ⏳ Pending upload | +| `Beam_fem1.fem` | FEM mesh file | ⏳ Pending upload | +| `Beam_fem1_i.prt` | Idealized part for FEM | ⏳ Pending upload | +| `Beam_sim1.sim` | Simulation file — SOL 101 static | ⏳ Pending upload | + +## Key Expression + +- `p173` — beam mass (kg) + +## Notes + +- Model files will be added once Syncthing/file transfer is set up +- Verify model rebuild across full design variable range before optimization diff --git a/projects/hydrotech-beam/studies/.gitkeep b/projects/hydrotech-beam/studies/.gitkeep new file mode 100644 index 00000000..e69de29b