Add GigaBIT M1 frame stiffness characterization project
- 3 studies: sensitivity (Method D), stiffness sweep (Method B), robustness - Atomizer specs with run matrices, Zernike annular OPD extractor - War-room validated hybrid B+D method
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projects/gigabit-m1-frame-stiffness/README.md
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projects/gigabit-m1-frame-stiffness/README.md
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# GigaBIT M1 — Reference Frame Stiffness Characterization
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**Client:** StarSpec
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**Project:** P04-GigaBIT-M1
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**Created:** 2026-03-04
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**Status:** Active — Model Setup
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---
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## Objective
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Determine minimum stiffness requirements for StarSpec's reference frame at 5 mirror support interface points. Quantify WFE sensitivity to frame compliance so StarSpec can design their frame to spec.
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## Approach
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**Hybrid B+D method** (war-room validated):
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1. **Method D (Sensitivity):** Prescribed unit displacements at each unique interface point, extract Zernike WFE sensitivity coefficients (nm/μm per DOF per point)
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2. **Method B (Stiffness Sweep):** CBUSH spring-to-ground at 5 interface points, sweep K to find knee points
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3. **Robustness:** One-soft-point, combined compliance, correlated displacement tests
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## Key Numbers
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| Metric | Value |
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|--------|-------|
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| Baseline WFE @ 40° | ~7.0 nm RMS (J5+ filtered) |
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| Baseline WFE @ 60° | ~13.0 nm RMS (J5+ filtered) |
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| ΔWFE budget (frame) | ≤ 1.0 nm RMS |
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| System allocation | ≤ 22 nm RMS (contract) |
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| Mechanical target | < 14 nm RMS |
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| Total runs | ~42 |
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## Interface Points (5 total)
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| Label | Type | Symmetry |
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|-------|------|----------|
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| V_top | Vertical support | Unique (on Y-Z symmetry axis) |
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| V_left | Vertical support | = V_right mirrored |
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| V_right | Vertical support | = V_left mirrored |
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| L_left | Lateral support | = L_right mirrored |
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| L_right | Lateral support | = L_left mirrored |
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**Unique points to test:** 3 (V_top, V_side, L_side)
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## Model
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- **Solver:** NX Nastran SOL 101 (linear static)
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- **Coordinate system:** Global (Z = optical axis)
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- **Zernike extractor:** Annular OPD, 50 modes, J5+ filtered RMS
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- **Reference subcase:** 20° elevation
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- **Test subcases:** 40° and 60° elevation
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- **Inner radius:** 135.75 mm (central hole)
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- **Outer radius:** 500.0 mm
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## Project Structure
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```
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gigabit-m1-frame-stiffness/
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├── README.md ← You are here
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├── models/ # NX model files (drop .prt and .sim here)
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├── studies/
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│ ├── 01_sensitivity_method_d/ # Unit displacement sensitivity (9+3 runs)
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│ ├── 02_stiffness_sweep_method_b/ # K sweep campaigns (20 runs)
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│ └── 03_robustness/ # One-soft-point, combined, correlated (8 runs)
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├── deliverables/ # StarSpec requirement document (Rev A)
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├── kb/ # Knowledge base notes
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└── images/ # Plots, screenshots
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```
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## PKM Reference
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Full documentation: `obsidian-vault/2-Projects/P04-GigaBIT-M1/03-studies/Reference-Frame-Stiffness-Characterization/`
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# Study 01 — Sensitivity Map (Method D)
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**Type:** Parametric — Prescribed Unit Displacements
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**Runs:** 12 (9 unique @ 60° + 1 baseline + 2 spot checks @ 40°)
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**Model:** Enforced displacement BCs with expression control
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## What This Does
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Applies +1 μm displacement at each unique interface point in each global DOF direction, one at a time. Measures ΔWFE to build a sensitivity matrix: **nm WFE per μm displacement per DOF per point.**
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This is the PRIMARY deliverable for StarSpec.
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## .sim Setup Required
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1. Create 9 NX expressions: `dV1_X, dV1_Y, dV1_Z, dV2_X, dV2_Y, dV2_Z, dL1_X, dL1_Y, dL1_Z` (all default = 0)
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2. Apply enforced displacement BCs on all 5 support nodes referencing these expressions
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3. Symmetry ties: V_right X = −dV2_X, L_right X = −dL1_X; Y/Z same sign as left counterpart
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4. Gravity load at target elevation (60° or 40°)
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## Extractor
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Zernike annular OPD: 50 modes, J5+ filtered, inner_radius = 135.75 mm, reference subcase = 20° elevation.
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**Also extract individually:** J9, J10 (trefoil) and J11 (spherical) for secondary reporting.
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## Output
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Sensitivity matrix → feed into displacement limits and StarSpec deliverable.
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{
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"meta": {
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"version": "2.0",
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"created": "2026-03-04T12:00:00Z",
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"modified": "2026-03-04T12:00:00Z",
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"created_by": "mario",
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"modified_by": "mario",
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"study_name": "01_sensitivity_method_d",
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"description": "Method D — Unit displacement sensitivity map. Apply +1 μm prescribed displacement at each unique interface point (3 points × 3 DOF = 9 runs), extract Zernike WFE sensitivity coefficients. Uses symmetry: V_left≡V_right, L_left≡L_right.",
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"tags": ["mirror", "zernike", "sensitivity", "frame-stiffness", "parametric"]
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},
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"model": {
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"sim": {
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"path": "ASSY_M1_assyfem1_sim1.sim",
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"solver": "nastran",
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"_note": "UPDATE: Set correct .sim filename after model drop"
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},
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"nx_settings": {
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"nx_install_path": "C:\\Program Files\\Siemens\\NX2506",
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"simulation_timeout_s": 600,
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"_note": "UPDATE: Adjust NX path for your machine if different"
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}
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},
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"design_variables": [
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{
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"id": "dv_001",
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"name": "dV1_X",
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"expression_name": "dV1_X",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "V_top displacement in global X (0 = fixed, 0.001 = +1 μm)"
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},
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{
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"id": "dv_002",
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"name": "dV1_Y",
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"expression_name": "dV1_Y",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "V_top displacement in global Y"
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},
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{
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"id": "dv_003",
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"name": "dV1_Z",
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"expression_name": "dV1_Z",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "V_top displacement in global Z (optical axis)"
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},
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{
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"id": "dv_004",
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"name": "dV2_X",
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"expression_name": "dV2_X",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "V_side (left) displacement in global X"
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},
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{
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"id": "dv_005",
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"name": "dV2_Y",
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"expression_name": "dV2_Y",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "V_side (left) displacement in global Y"
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},
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{
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"id": "dv_006",
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"name": "dV2_Z",
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"expression_name": "dV2_Z",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "V_side (left) displacement in global Z"
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},
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{
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"id": "dv_007",
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"name": "dL1_X",
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"expression_name": "dL1_X",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "L_side (left) displacement in global X"
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},
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{
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"id": "dv_008",
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"name": "dL1_Y",
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"expression_name": "dL1_Y",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "L_side (left) displacement in global Y"
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},
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{
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"id": "dv_009",
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"name": "dL1_Z",
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"expression_name": "dL1_Z",
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"type": "continuous",
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"bounds": {"min": 0.0, "max": 0.001},
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"baseline": 0.0,
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"units": "mm",
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"enabled": true,
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"description": "L_side (left) displacement in global Z"
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}
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],
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"extractors": [
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{
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"id": "ext_001",
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"name": "Zernike Annular OPD — WFE Sensitivity",
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"type": "zernike_opd",
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"builtin": true,
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"config": {
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"inner_radius_mm": 135.75,
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"outer_radius_mm": 500.0,
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"n_modes": 50,
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"filter_low_orders": 4,
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"displacement_unit": "mm",
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"reference_subcase": 2,
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"_note": "J5+ filtered RMS. reference_subcase=2 is 20° elevation. Check subcase numbering in your model."
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},
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"outputs": [
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{
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"name": "rel_filtered_rms_40_vs_20",
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"metric": "filtered_rms_nm"
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},
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{
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"name": "rel_filtered_rms_60_vs_20",
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"metric": "filtered_rms_nm"
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}
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]
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}
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],
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"objectives": [
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{
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"id": "obj_001",
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"name": "ΔWFE at 60° (primary — worst case)",
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"direction": "minimize",
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"weight": 1.0,
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"source": {
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"extractor_id": "ext_001",
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"output_name": "rel_filtered_rms_60_vs_20"
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},
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"target": 1.0,
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"units": "nm",
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"_note": "This is a parametric study, not optimization. Objective is for tracking only."
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}
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],
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"constraints": [],
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"optimization": {
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"algorithm": {
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"type": "GridSampler",
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"config": {
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"_note": "GridSampler for deterministic parametric sweep. Each run is a specific point in the design matrix."
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}
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},
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"budget": {
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"max_trials": 12
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},
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"_run_matrix_note": "Override with explicit trial list below. Each trial activates exactly ONE displacement expression = 0.001, rest = 0."
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},
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"run_matrix": {
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"_description": "Explicit trial definitions for Method D. Each row is one FEA run. Atomizer sets these expression values before solving.",
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"trials": [
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{"trial": 0, "label": "baseline_all_fixed", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "60"},
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{"trial": 1, "label": "V_top_Z", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0.001, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "60"},
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{"trial": 2, "label": "V_top_X", "dV1_X": 0.001, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "60"},
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{"trial": 3, "label": "V_top_Y", "dV1_X": 0, "dV1_Y": 0.001, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "60"},
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{"trial": 4, "label": "V_side_Z", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0.001, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "60"},
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{"trial": 5, "label": "V_side_X", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0.001, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "60"},
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{"trial": 6, "label": "V_side_Y", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0.001, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "60"},
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{"trial": 7, "label": "L_side_Z", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0.001, "elevation": "60"},
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{"trial": 8, "label": "L_side_X", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0.001, "dL1_Y": 0, "dL1_Z": 0, "elevation": "60"},
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{"trial": 9, "label": "L_side_Y", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0.001, "dL1_Z": 0, "elevation": "60"},
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{"trial": 10, "label": "spot_check_40_top1", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0.001, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "40", "_note": "Repeat top sensitive DOF at 40° — UPDATE label after ranking"},
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{"trial": 11, "label": "spot_check_40_top2", "dV1_X": 0, "dV1_Y": 0, "dV1_Z": 0, "dV2_X": 0, "dV2_Y": 0, "dV2_Z": 0.001, "dL1_X": 0, "dL1_Y": 0, "dL1_Z": 0, "elevation": "40", "_note": "UPDATE after ranking"}
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]
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}
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}
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# Study 02 — Stiffness Sweep (Method B)
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**Type:** Parametric — CBUSH Spring-to-Ground Sweep
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**Runs:** 22 (2 validation + 10 K_vert sweep + 10 K_lat sweep)
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**Model:** CBUSH elements at 5 interface points, offset ground nodes (−10mm Z)
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## What This Does
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Replaces fixed BCs with CBUSH springs. Sweeps translational stiffness from 1e4 → 1e10 N/m on log scale. Two independent campaigns:
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- Campaign 1: Sweep K_vert (laterals rigid)
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- Campaign 2: Sweep K_lat (verticals rigid)
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Finds the **knee point** where ΔWFE crosses the 1.0 nm budget.
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## .sim Setup Required
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1. Create 5 ground nodes (offset −10mm in −Z from each support node)
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2. SPC 123456 on all ground nodes
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3. Remove existing SPCs on 5 support nodes
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4. Create 5 CBUSH elements (support → ground, global coords)
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5. Create 2 PBUSH properties: 8001 (vertical, K=$K_vert) and 8002 (lateral, K=$K_lat)
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6. Create 2 NX expressions: `K_vert`, `K_lat` (default = 1e12)
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## Extractor
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Same as Study 01: Zernike annular OPD, 50 modes, J5+ filtered, annular aperture.
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## Output
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ΔWFE vs K curves → knee points → recommended minimum stiffness for StarSpec.
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@@ -0,0 +1,126 @@
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{
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"meta": {
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"version": "2.0",
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"created": "2026-03-04T12:00:00Z",
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"modified": "2026-03-04T12:00:00Z",
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"created_by": "mario",
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"modified_by": "mario",
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"study_name": "02_stiffness_sweep_method_b",
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"description": "Method B — CBUSH spring-to-ground stiffness sweep. 5 CBUSH elements at interface points (offset 10mm in -Z). Sweep K_vertical (3 vertical CBUSHes) and K_lateral (2 lateral CBUSHes) independently to find knee points where ΔWFE exceeds 1.0 nm budget.",
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"tags": ["mirror", "zernike", "stiffness", "frame-stiffness", "parametric", "cbush"]
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},
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"model": {
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"sim": {
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"path": "ASSY_M1_assyfem1_sim1.sim",
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"solver": "nastran",
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"_note": "UPDATE: This uses the CBUSH model variant (.sim with CBUSH elements + offset ground nodes). Different from Study 01."
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},
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"nx_settings": {
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"nx_install_path": "C:\\Program Files\\Siemens\\NX2506",
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"simulation_timeout_s": 600
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}
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},
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"design_variables": [
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{
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"id": "dv_001",
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"name": "K_vert",
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"expression_name": "K_vert",
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"type": "continuous",
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"bounds": {"min": 1e4, "max": 1e12},
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"baseline": 1e12,
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"units": "N/m",
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"enabled": true,
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"description": "Translational stiffness for all 3 vertical support CBUSHes (K1=K2=K3=K_vert). Rotational K4=K5=K6 held at 1e12."
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},
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{
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"id": "dv_002",
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"name": "K_lat",
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"expression_name": "K_lat",
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"type": "continuous",
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"bounds": {"min": 1e4, "max": 1e12},
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"baseline": 1e12,
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"units": "N/m",
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"enabled": true,
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"description": "Translational stiffness for all 2 lateral support CBUSHes (K1=K2=K3=K_lat). Rotational K4=K5=K6 held at 1e12."
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}
|
||||
],
|
||||
"extractors": [
|
||||
{
|
||||
"id": "ext_001",
|
||||
"name": "Zernike Annular OPD — Stiffness Sweep",
|
||||
"type": "zernike_opd",
|
||||
"builtin": true,
|
||||
"config": {
|
||||
"inner_radius_mm": 135.75,
|
||||
"outer_radius_mm": 500.0,
|
||||
"n_modes": 50,
|
||||
"filter_low_orders": 4,
|
||||
"displacement_unit": "mm",
|
||||
"reference_subcase": 2
|
||||
},
|
||||
"outputs": [
|
||||
{
|
||||
"name": "rel_filtered_rms_40_vs_20",
|
||||
"metric": "filtered_rms_nm"
|
||||
},
|
||||
{
|
||||
"name": "rel_filtered_rms_60_vs_20",
|
||||
"metric": "filtered_rms_nm"
|
||||
}
|
||||
]
|
||||
}
|
||||
],
|
||||
"objectives": [
|
||||
{
|
||||
"id": "obj_001",
|
||||
"name": "ΔWFE at 60° — stiffness sweep tracking",
|
||||
"direction": "minimize",
|
||||
"weight": 1.0,
|
||||
"source": {
|
||||
"extractor_id": "ext_001",
|
||||
"output_name": "rel_filtered_rms_60_vs_20"
|
||||
},
|
||||
"target": 1.0,
|
||||
"units": "nm"
|
||||
}
|
||||
],
|
||||
"constraints": [],
|
||||
"optimization": {
|
||||
"algorithm": {
|
||||
"type": "GridSampler",
|
||||
"config": {}
|
||||
},
|
||||
"budget": {
|
||||
"max_trials": 22
|
||||
}
|
||||
},
|
||||
"run_matrix": {
|
||||
"_description": "Campaign 1: Sweep K_vert (K_lat=1e12). Campaign 2: Sweep K_lat (K_vert=1e12). All at 60° elevation.",
|
||||
"trials": [
|
||||
{"trial": 0, "label": "baseline_rigid", "K_vert": 1e12, "K_lat": 1e12, "elevation": "60", "_note": "Validation: should match fixed-BC baseline"},
|
||||
{"trial": 1, "label": "baseline_rigid_40", "K_vert": 1e12, "K_lat": 1e12, "elevation": "40", "_note": "Validation at 40°"},
|
||||
|
||||
{"trial": 2, "label": "Kv_1e4", "K_vert": 1e4, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 3, "label": "Kv_1e5", "K_vert": 1e5, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 4, "label": "Kv_3e5", "K_vert": 3e5, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 5, "label": "Kv_1e6", "K_vert": 1e6, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 6, "label": "Kv_3e6", "K_vert": 3e6, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 7, "label": "Kv_1e7", "K_vert": 1e7, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 8, "label": "Kv_3e7", "K_vert": 3e7, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 9, "label": "Kv_1e8", "K_vert": 1e8, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 10, "label": "Kv_1e9", "K_vert": 1e9, "K_lat": 1e12, "elevation": "60"},
|
||||
{"trial": 11, "label": "Kv_1e10", "K_vert": 1e10, "K_lat": 1e12, "elevation": "60"},
|
||||
|
||||
{"trial": 12, "label": "Kl_1e4", "K_vert": 1e12, "K_lat": 1e4, "elevation": "60"},
|
||||
{"trial": 13, "label": "Kl_1e5", "K_vert": 1e12, "K_lat": 1e5, "elevation": "60"},
|
||||
{"trial": 14, "label": "Kl_3e5", "K_vert": 1e12, "K_lat": 3e5, "elevation": "60"},
|
||||
{"trial": 15, "label": "Kl_1e6", "K_vert": 1e12, "K_lat": 1e6, "elevation": "60"},
|
||||
{"trial": 16, "label": "Kl_3e6", "K_vert": 1e12, "K_lat": 3e6, "elevation": "60"},
|
||||
{"trial": 17, "label": "Kl_1e7", "K_vert": 1e12, "K_lat": 1e7, "elevation": "60"},
|
||||
{"trial": 18, "label": "Kl_3e7", "K_vert": 1e12, "K_lat": 3e7, "elevation": "60"},
|
||||
{"trial": 19, "label": "Kl_1e8", "K_vert": 1e12, "K_lat": 1e8, "elevation": "60"},
|
||||
{"trial": 20, "label": "Kl_1e9", "K_vert": 1e12, "K_lat": 1e9, "elevation": "60"},
|
||||
{"trial": 21, "label": "Kl_1e10", "K_vert": 1e12, "K_lat": 1e10, "elevation": "60"}
|
||||
]
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,26 @@
|
||||
# Study 03 — Robustness Checks
|
||||
|
||||
**Type:** Parametric — Specific Scenarios
|
||||
**Runs:** 8
|
||||
**Model:** Uses both .sim setups (CBUSH for K tests, displacement for correlated tests)
|
||||
**Prerequisite:** Complete Studies 01 and 02 first (needs knee values)
|
||||
|
||||
## What This Does
|
||||
|
||||
Tests scenarios that the simple sweeps can't capture:
|
||||
|
||||
1. **One-soft-point (3 runs):** What if one support is 10× softer than the rest?
|
||||
2. **Combined compliance (3 runs):** Both vertical and lateral at knee values simultaneously
|
||||
3. **Correlated displacement (2 runs):** All verticals move together (frame bending mode simulation)
|
||||
|
||||
## Before Running
|
||||
|
||||
Update `atomizer_spec.json` with actual knee values from Study 02:
|
||||
- Replace `KNEE` placeholders with K_vert_knee and K_lat_knee values
|
||||
- Replace `KNEE/10` with knee/10, `KNEE/2` with knee/2
|
||||
|
||||
## Output
|
||||
|
||||
- Interaction factor: is combined ΔWFE > sum of individual?
|
||||
- Worst-case single soft point identification
|
||||
- Correlated vs independent displacement comparison
|
||||
@@ -0,0 +1,123 @@
|
||||
{
|
||||
"meta": {
|
||||
"version": "2.0",
|
||||
"created": "2026-03-04T12:00:00Z",
|
||||
"modified": "2026-03-04T12:00:00Z",
|
||||
"created_by": "mario",
|
||||
"modified_by": "mario",
|
||||
"study_name": "03_robustness",
|
||||
"description": "Robustness checks: one-soft-point tests, combined compliance, and correlated displacement patterns. Run AFTER Studies 01 and 02 — uses knee values from Study 02.",
|
||||
"tags": ["mirror", "zernike", "robustness", "frame-stiffness"]
|
||||
},
|
||||
"model": {
|
||||
"sim": {
|
||||
"path": "ASSY_M1_assyfem1_sim1.sim",
|
||||
"solver": "nastran",
|
||||
"_note": "Uses same CBUSH model variant as Study 02"
|
||||
},
|
||||
"nx_settings": {
|
||||
"nx_install_path": "C:\\Program Files\\Siemens\\NX2506",
|
||||
"simulation_timeout_s": 600
|
||||
}
|
||||
},
|
||||
"design_variables": [
|
||||
{
|
||||
"id": "dv_001",
|
||||
"name": "K_V_top",
|
||||
"expression_name": "K_V_top",
|
||||
"type": "continuous",
|
||||
"bounds": {"min": 1e4, "max": 1e12},
|
||||
"baseline": 1e12,
|
||||
"units": "N/m",
|
||||
"enabled": true,
|
||||
"description": "Stiffness for V_top CBUSH only (for one-soft-point tests)"
|
||||
},
|
||||
{
|
||||
"id": "dv_002",
|
||||
"name": "K_V_side",
|
||||
"expression_name": "K_V_side",
|
||||
"type": "continuous",
|
||||
"bounds": {"min": 1e4, "max": 1e12},
|
||||
"baseline": 1e12,
|
||||
"units": "N/m",
|
||||
"enabled": true,
|
||||
"description": "Stiffness for V_left + V_right CBUSHes (symmetric pair)"
|
||||
},
|
||||
{
|
||||
"id": "dv_003",
|
||||
"name": "K_L_side",
|
||||
"expression_name": "K_L_side",
|
||||
"type": "continuous",
|
||||
"bounds": {"min": 1e4, "max": 1e12},
|
||||
"baseline": 1e12,
|
||||
"units": "N/m",
|
||||
"enabled": true,
|
||||
"description": "Stiffness for L_left + L_right CBUSHes (symmetric pair)"
|
||||
}
|
||||
],
|
||||
"extractors": [
|
||||
{
|
||||
"id": "ext_001",
|
||||
"name": "Zernike Annular OPD — Robustness",
|
||||
"type": "zernike_opd",
|
||||
"builtin": true,
|
||||
"config": {
|
||||
"inner_radius_mm": 135.75,
|
||||
"outer_radius_mm": 500.0,
|
||||
"n_modes": 50,
|
||||
"filter_low_orders": 4,
|
||||
"displacement_unit": "mm",
|
||||
"reference_subcase": 2
|
||||
},
|
||||
"outputs": [
|
||||
{
|
||||
"name": "rel_filtered_rms_40_vs_20",
|
||||
"metric": "filtered_rms_nm"
|
||||
},
|
||||
{
|
||||
"name": "rel_filtered_rms_60_vs_20",
|
||||
"metric": "filtered_rms_nm"
|
||||
}
|
||||
]
|
||||
}
|
||||
],
|
||||
"objectives": [
|
||||
{
|
||||
"id": "obj_001",
|
||||
"name": "ΔWFE at 60° — robustness tracking",
|
||||
"direction": "minimize",
|
||||
"weight": 1.0,
|
||||
"source": {
|
||||
"extractor_id": "ext_001",
|
||||
"output_name": "rel_filtered_rms_60_vs_20"
|
||||
},
|
||||
"target": 1.0,
|
||||
"units": "nm"
|
||||
}
|
||||
],
|
||||
"constraints": [],
|
||||
"optimization": {
|
||||
"algorithm": {
|
||||
"type": "GridSampler",
|
||||
"config": {}
|
||||
},
|
||||
"budget": {
|
||||
"max_trials": 8
|
||||
}
|
||||
},
|
||||
"run_matrix": {
|
||||
"_description": "UPDATE K_knee values after Study 02 completes. Replace 'KNEE' placeholders with actual values.",
|
||||
"_K_vert_knee": "UPDATE_FROM_STUDY_02",
|
||||
"_K_lat_knee": "UPDATE_FROM_STUDY_02",
|
||||
"trials": [
|
||||
{"trial": 0, "label": "one_soft_V_top", "K_V_top": "KNEE/10", "K_V_side": 1e12, "K_L_side": 1e12, "elevation": "60", "_note": "V_top 10× below knee, rest rigid"},
|
||||
{"trial": 1, "label": "one_soft_V_side", "K_V_top": 1e12, "K_V_side": "KNEE/10", "K_L_side": 1e12, "elevation": "60", "_note": "V_side 10× below knee, rest rigid"},
|
||||
{"trial": 2, "label": "one_soft_L_side", "K_V_top": 1e12, "K_V_side": 1e12, "K_L_side": "KNEE/10", "elevation": "60", "_note": "L_side 10× below knee, rest rigid"},
|
||||
{"trial": 3, "label": "combined_knee_60", "K_V_top": "KNEE", "K_V_side": "KNEE", "K_L_side": "KNEE", "elevation": "60", "_note": "All at knee values"},
|
||||
{"trial": 4, "label": "combined_knee_40", "K_V_top": "KNEE", "K_V_side": "KNEE", "K_L_side": "KNEE", "elevation": "40", "_note": "All at knee @ 40°"},
|
||||
{"trial": 5, "label": "combined_half_60", "K_V_top": "KNEE/2", "K_V_side": "KNEE/2", "K_L_side": "KNEE/2", "elevation": "60", "_note": "All at half knee"},
|
||||
{"trial": 6, "label": "corr_sag_all_V_down", "_type": "method_d", "_note": "USE Study 01 setup: dV1_Z=dV2_Z=0.001 simultaneously (all 3 vertical +1μm Z). Tests correlated frame sag."},
|
||||
{"trial": 7, "label": "corr_twist_V_split", "_type": "method_d", "_note": "USE Study 01 setup: dV1_Z=+0.001, dV2_Z=-0.001 (V_top up, V_sides down). Tests frame twist."}
|
||||
]
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user