Rewrote test_elasticity_1d.jl to follow immutable element pattern.
This is the first fully working test with the new architecture!
Changes:
1. test/test_elasticity_1d.jl:
- Convert Dict node data to element-local tuple format
- Wrap data in DVTI field objects (Discrete, Variable, Time-Invariant)
- Create element with fields at construction: Element(Seg2, conn; fields=(...))
- Fix Jacobian shape expectation (3×1 not 1×3 for 1D in 3D)
2. src/JuliaFEM.jl:
- Add minimal jacobian() function for AbstractBasis (non-parametric)
- Handles embedding (1D element in 3D space) correctly
- Returns Matrix instead of Tensor for flexibility
3. src/elements/elements.jl:
- Fix Jacobian computation to handle both Tuple and IntegrationPoint
- Fix detJ calculation logic for embedded elements (check m not size(JT,2))
- Correctly handle 1D elements: detJ = ||∂X/∂ξ||
Result: test_elasticity_1d.jl passes! ✓
This validates the immutable architecture:
- Element created with fields at construction
- No mutation needed during test
- Field system integration working (DVTI fields)
- Jacobian computation working for embedded elements
Jukka Aho
aab8b7d6ce