02.08 · Laminate orientation and tensile response →
Level 2DevelopingEst. 25 min
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All blocks keep the CREATE / DISCOVER / SIMULATE positions, with Equipment below Geometry; unused records remain disconnected. This changes the view only, not the exercise records. The diagram shows the setup, not solved results.
Open the copied laminate and record the initial stacking sequence and total thickness.
Classical laminate theory · Linear static · ASTM D3039-17(2025)-based
ASTM-based teaching geometry, not certification. Grips, tabs, alignment and physical test validity are not simulated.
Recorded checks · 2026-10-31
Reference validation · 2026-10-31
Benchmark validated — analytical scope
Listed reference-elastic extensional constants only; free curvature, ply stresses, strength and every user variation are outside this badge.
Recorded baseline only—not a certification of the current database, edited inputs, or every output. Analytical agreement is not experimental material or failure validation.
Source validation, comparisons and tested inputs
Execution: Completed (not validation)
| Quantity | CDS | Reference | Error % | Tolerance (relative + absolute) | Result |
|---|---|---|---|---|---|
| Ex (GPa) | 51.92147 | 51.92147 | -0.000007455559 | 0.01% + 0.00002 GPa | Pass |
| Ey (GPa) | 51.92147 | 51.92147 | -0.000007455559 | 0.01% + 0.00002 GPa | Pass |
| Gxy (GPa) | 19.81407 | 19.81407 | 0.00001959758 | 0.01% + 0.00002 GPa | Pass |
| νxy (—) | 0.31022 | 0.3102175 | 0.0007934734 | 0.01% + 0.00002 — | Pass |
- MIT / David Roylance — Laminated Composite Plates ↗Transformed plane-stress constitutive law and laminate extensional stiffness, equations 10–11 and 20–25. Independent strain/stress transformation and thickness integration; prescribed input elasticity is not validated.
Tested inputs
Reference ply list (GPa, mm, degrees)
[{"e1":135,"e2":9,"nu":0.31,"g":4.8,"angle":0,"t":0.25},{"e1":135,"e2":9,"nu":0.31,"g":4.8,"angle":45,"t":0.25},{"e1":135,"e2":9,"nu":0.31,"g":4.8,"angle":-45,"t":0.25},{"e1":135,"e2":9,"nu":0.31,"g":4.8,"angle":90,"t":0.25},{"e1":135,"e2":9,"nu":0.31,"g":4.8,"angle":90,"t":0.25},{"e1":135,"e2":9,"nu":0.31,"g":4.8,"angle":-45,"t":0.25},{"e1":135,"e2":9,"nu":0.31,"g":4.8,"angle":45,"t":0.25},{"e1":135,"e2":9,"nu":0.31,"g":4.8,"angle":0,"t":0.25}]Input SHA-256: bcd87ea7ad5c3bc06958f1b2d1fadd0146279a7b20a56c59eb14e9ef46701135
Solver source SHA-256: cde316d69ee40b2714f26fd4d6d822f774242b37323c9419f2b6142aff317ca9
- ASTM-based teaching geometry, not certification. Grips, tabs, alignment and physical test validity are not simulated.
Download source-validation results (JSON) · Full 184-exercise study
