auto: daily sync

projects/hydrotech-beam/studies/01_doe_landscape/README.md

@@ -0,0 +1,71 @@
+# Study: 01_doe_landscape — Hydrotech Beam
+
+> See [../../README.md](../../README.md) for project overview.
+
+## Purpose
+
+Map the design space of the Hydrotech sandwich I-beam to identify feasible regions, characterize variable sensitivities, and converge on a minimum-mass design that satisfies displacement and stress constraints.
+
+## Quick Facts
+
+| Item | Value |
+|------|-------|
+| **Objective** | Minimize mass (kg) |
+| **Constraints** | Tip displacement ≤ 10 mm, Von Mises stress ≤ 130 MPa |
+| **Design variables** | 4 (3 continuous + 1 integer) |
+| **Algorithm** | Phase 1: LHS DoE (50 trials) → Phase 2: TPE (60-100 trials) |
+| **Total budget** | 114–156 NX evaluations |
+| **Estimated compute** | ~4–5 hours |
+| **Status** | DRAFT — Awaiting pre-flight checks and review |
+
+## Design Variables
+
+| ID | Name | Range | Type | Baseline |
+|----|------|-------|------|----------|
+| DV1 | `beam_half_core_thickness` | 10–40 mm | Continuous | 20 mm |
+| DV2 | `beam_face_thickness` | 10–40 mm | Continuous | 20 mm |
+| DV3 | `holes_diameter` | 150–450 mm | Continuous | 300 mm |
+| DV4 | `hole_count` | 5–15 | Integer | 10 |
+
+## Baseline Performance
+
+| Metric | Value | Constraint | Status |
+|--------|-------|------------|--------|
+| Mass | ~974 kg | minimize | Overbuilt |
+| Tip displacement | ~22 mm | ≤ 10 mm | ❌ FAILS |
+| VM stress | unknown | ≤ 130 MPa | ⚠️ TBD |
+
+## Key Decisions
+
+- **Single-objective** formulation (DEC-HB-001)
+- **Two-phase** algorithm: LHS → TPE (DEC-HB-002)
+- **True integer** handling for hole_count (DEC-HB-003)
+- **Deb's feasibility rules** for constraint handling (infeasible baseline)
+- **Baseline enqueued** as Trial 0 (LAC lesson)
+
+## Files
+
+| File | Description |
+|------|-------------|
+| `OPTIMIZATION_STRATEGY.md` | Full strategy document (problem formulation, algorithm selection, risk mitigation) |
+| `atomizer_spec_draft.json` | AtomizerSpec configuration skeleton (DRAFT — open items must be resolved) |
+| `README.md` | This file |
+
+## Open Items Before Execution
+
+1. Beam web length needed (geometric feasibility of hole patterns)
+2. Displacement extraction method (sensor vs .op2 node parsing)
+3. Stress extraction scope (whole model vs element group)
+4. Baseline stress measurement
+5. SOL 101 runtime benchmark
+6. Corner test validation (16 bound combinations)
+
+## References
+
+- [BREAKDOWN.md](../../BREAKDOWN.md) — Tech Lead's technical analysis
+- [DECISIONS.md](../../DECISIONS.md) — Decision log
+- [CONTEXT.md](../../CONTEXT.md) — Project context
+
+---
+
+*Created by ⚡ Optimizer Agent | 2026-02-09*