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# Steel — AISI 1005
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**Status:** Baseline material confirmed (Gen 002)
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**NX Material Name:** "beam material" (inherited by thin shell property)
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---
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## Properties
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| Property | Value | Units | Source | Confidence |
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|----------|-------|-------|--------|------------|
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| Standard | AISI / SAE | — | KBS session | ✅ Confirmed |
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| Grade | **1005** | — | KBS session ("NSE steel 10 or 5" = ANSI Steel 1005) | ✅ Confirmed |
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| Density | **7.3** | g/cm³ (7,300 kg/m³) | KBS session — Antoine stated directly | ✅ Confirmed |
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| E (Young's modulus) | ~200 | GPa | Typical for AISI 1005 — **needs NX verification** | 🟡 Estimated |
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| Yield strength | ~285 | MPa | Typical for AISI 1005 (cold-drawn) — **needs NX verification** | 🟡 Estimated |
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| UTS | ~330 | MPa | Typical for AISI 1005 — **needs NX verification** | 🟡 Estimated |
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| Poisson's ratio | ~0.29 | — | Typical for carbon steel — **needs NX verification** | 🟡 Estimated |
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| Elongation | ~20 | % | Typical for AISI 1005 — **needs verification** | 🟡 Estimated |
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## Notes on AISI 1005
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- AISI 1005 is a **low-carbon plain steel** (0.06% max C) in the 10xx series
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- Commonly used for structural applications — good weldability, moderate strength
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- NX material library designation may vary (Antoine said "NSE steel 10 or 5" which maps to ANSI/AISI Steel 1005)
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- **Density note:** Antoine stated 7.3 g/cm³. Standard steel is 7.85 g/cm³. The 7.3 value may be the NX library default or a specific setting. This affects mass calculation directly.
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## Stress Allowable
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| Parameter | Value | Basis | Status |
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|-----------|-------|-------|--------|
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| Stress constraint | 130 MPa | From intake — Gap G9 | 🟡 Not yet confirmed for Gen 002 |
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| Implied safety factor | ~2.2 | vs. 285 MPa yield (estimated) | Conservative |
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> ⚠️ Need to confirm whether the 130 MPa stress limit from Gen 001 intake still applies given the mass discrepancy resolution. The 130 MPa may have been set for the ~974 kg model.
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## Future Material Expansion
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Antoine explicitly requested future material support (KBS session 20260210-163801):
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| Material | Standard | Priority | Notes |
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|----------|----------|----------|-------|
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| **Aluminum 6061** | — | Future | Antoine: "change this type of material for aluminum, 6061" |
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| **Stainless Steel ANSI 310** | ANSI 310 | Future | Antoine: "stainless steel. ANSI, let's say 310" |
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> Antoine's instruction: "Don't start with [these]. Just add this as a future expansion for the optimization process."
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### Material Expansion Implications
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- Multi-material optimization would change the problem fundamentally:
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- Different E, ρ, σ_y for each material → different optimal geometries
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- Could be handled as a categorical DV or separate optimization runs per material
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- Aluminum 6061: E ≈ 69 GPa, ρ ≈ 2.7 g/cm³, σ_y ≈ 276 MPa — lighter but much less stiff
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- SS 310: E ≈ 200 GPa, ρ ≈ 8.0 g/cm³, σ_y ≈ 205 MPa — heavier, similar stiffness, lower yield
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## History
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- **Gen 001** (2026-02-09): Placeholder — only knew "Steel (AISI)"
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- **Gen 002** (2026-02-10): Confirmed AISI 1005 from KBS session. Density confirmed 7.3 g/cm³. Future materials flagged (Al 6061, SS 310). Typical mechanical properties added (pending NX verification).
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# Steel — AISI 1005
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**Status:** Baseline material confirmed (Gen 002)
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**NX Material Name:** "beam material" (inherited by thin shell property)
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---
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## Properties
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| Property | Value | Units | Source | Confidence |
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|----------|-------|-------|--------|------------|
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| Standard | AISI / SAE | — | KBS session | ✅ Confirmed |
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| Grade | **1005** | — | KBS session ("NSE steel 10 or 5" = ANSI Steel 1005) | ✅ Confirmed |
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| Density | **7.3** | g/cm³ (7,300 kg/m³) | KBS session — Antoine stated directly | ✅ Confirmed |
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| E (Young's modulus) | ~200 | GPa | Typical for AISI 1005 — **needs NX verification** | 🟡 Estimated |
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| Yield strength | ~285 | MPa | Typical for AISI 1005 (cold-drawn) — **needs NX verification** | 🟡 Estimated |
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| UTS | ~330 | MPa | Typical for AISI 1005 — **needs NX verification** | 🟡 Estimated |
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| Poisson's ratio | ~0.29 | — | Typical for carbon steel — **needs NX verification** | 🟡 Estimated |
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| Elongation | ~20 | % | Typical for AISI 1005 — **needs verification** | 🟡 Estimated |
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## Notes on AISI 1005
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- AISI 1005 is a **low-carbon plain steel** (0.06% max C) in the 10xx series
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- Commonly used for structural applications — good weldability, moderate strength
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- NX material library designation may vary (Antoine said "NSE steel 10 or 5" which maps to ANSI/AISI Steel 1005)
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- **Density note:** Antoine stated 7.3 g/cm³. Standard steel is 7.85 g/cm³. The 7.3 value may be the NX library default or a specific setting. This affects mass calculation directly.
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## Stress Allowable
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| Parameter | Value | Basis | Status |
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|-----------|-------|-------|--------|
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| Stress constraint | 130 MPa | From intake — Gap G9 | 🟡 Not yet confirmed for Gen 002 |
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| Implied safety factor | ~2.2 | vs. 285 MPa yield (estimated) | Conservative |
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> ⚠️ Need to confirm whether the 130 MPa stress limit from Gen 001 intake still applies given the mass discrepancy resolution. The 130 MPa may have been set for the ~974 kg model.
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## Future Material Expansion
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Antoine explicitly requested future material support (KBS session 20260210-163801):
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| Material | Standard | Priority | Notes |
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|----------|----------|----------|-------|
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| **Aluminum 6061** | — | Future | Antoine: "change this type of material for aluminum, 6061" |
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| **Stainless Steel ANSI 310** | ANSI 310 | Future | Antoine: "stainless steel. ANSI, let's say 310" |
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> Antoine's instruction: "Don't start with [these]. Just add this as a future expansion for the optimization process."
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### Material Expansion Implications
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- Multi-material optimization would change the problem fundamentally:
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- Different E, ρ, σ_y for each material → different optimal geometries
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- Could be handled as a categorical DV or separate optimization runs per material
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- Aluminum 6061: E ≈ 69 GPa, ρ ≈ 2.7 g/cm³, σ_y ≈ 276 MPa — lighter but much less stiff
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- SS 310: E ≈ 200 GPa, ρ ≈ 8.0 g/cm³, σ_y ≈ 205 MPa — heavier, similar stiffness, lower yield
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## History
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- **Gen 001** (2026-02-09): Placeholder — only knew "Steel (AISI)"
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- **Gen 002** (2026-02-10): Confirmed AISI 1005 from KBS session. Density confirmed 7.3 g/cm³. Future materials flagged (Al 6061, SS 310). Typical mechanical properties added (pending NX verification).
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@@ -1,26 +1,26 @@
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# Steel (AISI)
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**Status:** Placeholder — needs full material card details
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---
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## Properties
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| Property | Value | Units | Source |
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|----------|-------|-------|--------|
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| Standard | AISI | — | Intake |
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| Grade | ❓ TBD | — | Need from NX model |
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| Yield strength | ❓ TBD | MPa | — |
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| E (Young's modulus) | ❓ TBD | GPa | — |
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| Density | ❓ TBD | kg/m³ | — |
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| Poisson's ratio | ❓ TBD | — | — |
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## Notes
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- Stress allowable of 130 MPa was given as constraint — need to confirm basis (Gap G9)
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- If yield is ~250 MPa, then 130 MPa implies SF ≈ 1.9 — conservative
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- Material card should be extracted from NX model during introspection
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## History
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- **Gen 001** (2026-02-09): Placeholder from intake — "Steel (AISI)" is all we have
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# Steel (AISI)
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**Status:** Placeholder — needs full material card details
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---
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## Properties
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| Property | Value | Units | Source |
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|----------|-------|-------|--------|
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| Standard | AISI | — | Intake |
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| Grade | ❓ TBD | — | Need from NX model |
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| Yield strength | ❓ TBD | MPa | — |
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| E (Young's modulus) | ❓ TBD | GPa | — |
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| Density | ❓ TBD | kg/m³ | — |
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| Poisson's ratio | ❓ TBD | — | — |
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## Notes
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- Stress allowable of 130 MPa was given as constraint — need to confirm basis (Gap G9)
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- If yield is ~250 MPa, then 130 MPa implies SF ≈ 1.9 — conservative
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- Material card should be extracted from NX model during introspection
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## History
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- **Gen 001** (2026-02-09): Placeholder from intake — "Steel (AISI)" is all we have
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@@ -0,0 +1,59 @@
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# Steel — AISI 1005
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**Status:** Baseline material confirmed (Gen 002)
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**NX Material Name:** "beam material" (inherited by thin shell property)
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---
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## Properties
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| Property | Value | Units | Source | Confidence |
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|----------|-------|-------|--------|------------|
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| Standard | AISI / SAE | — | KBS session | ✅ Confirmed |
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| Grade | **1005** | — | KBS session ("NSE steel 10 or 5" = ANSI Steel 1005) | ✅ Confirmed |
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| Density | **7.3** | g/cm³ (7,300 kg/m³) | KBS session — Antoine stated directly | ✅ Confirmed |
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| E (Young's modulus) | ~200 | GPa | Typical for AISI 1005 — **needs NX verification** | 🟡 Estimated |
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| Yield strength | ~285 | MPa | Typical for AISI 1005 (cold-drawn) — **needs NX verification** | 🟡 Estimated |
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| UTS | ~330 | MPa | Typical for AISI 1005 — **needs NX verification** | 🟡 Estimated |
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| Poisson's ratio | ~0.29 | — | Typical for carbon steel — **needs NX verification** | 🟡 Estimated |
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| Elongation | ~20 | % | Typical for AISI 1005 — **needs verification** | 🟡 Estimated |
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## Notes on AISI 1005
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- AISI 1005 is a **low-carbon plain steel** (0.06% max C) in the 10xx series
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- Commonly used for structural applications — good weldability, moderate strength
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- NX material library designation may vary (Antoine said "NSE steel 10 or 5" which maps to ANSI/AISI Steel 1005)
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- **Density note:** Antoine stated 7.3 g/cm³. Standard steel is 7.85 g/cm³. The 7.3 value may be the NX library default or a specific setting. This affects mass calculation directly.
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## Stress Allowable
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| Parameter | Value | Basis | Status |
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|-----------|-------|-------|--------|
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| Stress constraint | 130 MPa | From intake — Gap G9 | 🟡 Not yet confirmed for Gen 002 |
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| Implied safety factor | ~2.2 | vs. 285 MPa yield (estimated) | Conservative |
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> ⚠️ Need to confirm whether the 130 MPa stress limit from Gen 001 intake still applies given the mass discrepancy resolution. The 130 MPa may have been set for the ~974 kg model.
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## Future Material Expansion
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Antoine explicitly requested future material support (KBS session 20260210-163801):
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| Material | Standard | Priority | Notes |
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|----------|----------|----------|-------|
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| **Aluminum 6061** | — | Future | Antoine: "change this type of material for aluminum, 6061" |
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| **Stainless Steel ANSI 310** | ANSI 310 | Future | Antoine: "stainless steel. ANSI, let's say 310" |
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> Antoine's instruction: "Don't start with [these]. Just add this as a future expansion for the optimization process."
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### Material Expansion Implications
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- Multi-material optimization would change the problem fundamentally:
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- Different E, ρ, σ_y for each material → different optimal geometries
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- Could be handled as a categorical DV or separate optimization runs per material
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- Aluminum 6061: E ≈ 69 GPa, ρ ≈ 2.7 g/cm³, σ_y ≈ 276 MPa — lighter but much less stiff
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- SS 310: E ≈ 200 GPa, ρ ≈ 8.0 g/cm³, σ_y ≈ 205 MPa — heavier, similar stiffness, lower yield
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## History
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- **Gen 001** (2026-02-09): Placeholder — only knew "Steel (AISI)"
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- **Gen 002** (2026-02-10): Confirmed AISI 1005 from KBS session. Density confirmed 7.3 g/cm³. Future materials flagged (Al 6061, SS 310). Typical mechanical properties added (pending NX verification).
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