# 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

- ⏳ Awaiting Syncthing setup for project folder sync (dalidou ↔ server)
- Model files will appear here once sync is live
- Verify model rebuild across full design variable range before optimization
- **Do NOT modify these reference copies** — studies copy them to their own `model/` folder