One homogeneous linear static element, compared on the same mesh with Code_Aster 18.1.0. Historical development cycle evidence retained in the published source.
Model & assumptions
What was actually compared?
8 nodes, one HEX8 element, 24 displacement DOFs.
Isotropic elasticity: E = 210 GPa, ν = 0.3, SI units.
All translations fixed at x = 0; the frozen nodal load has a total Z resultant of −1,000 N.
The load is distributed across the frozen x = 1 node set. HEX20 uses an explicit local connectivity permutation.
The QF reference is the accepted WP11 M1 result; WP12 does not rerun that solver result.
Scope boundaries
Where the evidence stops
Same mesh numerical correlation; no physical measurement validation.
No stress field equivalence, general mesh convergence, or cross family equivalence.
No nonlinear, contact, friction, dynamic, MPI, or scaling correlation is established.
The execution record says PASS_CANDIDATE; the separate Owner record accepts the bounded scope with limitations.
Recorded observables
Displayed values are rounded. Exact values, threshold definitions and original execution identities remain in the source records.
Observable
Recorded value
Frozen threshold
Displacement relative L2 difference
7.501e−16
1e−8
Reaction relative L2 difference
1.046e−15
1e−8
Energy from external work: relative difference
7.938e−16
1e−8
Open the original records.
These links use the published source tag. The files preserve their own historical source hashes and decision status; viewing them is not a rerun.
