# 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
- [USER_GUIDE.md](USER_GUIDE.md) — Living user guide (operators + bots)
- [playbooks/DOE.md](playbooks/DOE.md) — DOE execution playbook
- [playbooks/NX_REAL_RUN.md](playbooks/NX_REAL_RUN.md) — Real NX run checklist
- [playbooks/SYNCTHING_RECOVERY.md](playbooks/SYNCTHING_RECOVERY.md) — Sync recovery and cleanup
- [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 |