BEAM2 shaft and centered rigid axisymmetric disks at constant signed speed. GYRO 01 to 05 provide complementary formulation, analytical and tracking checks.
Model & assumptions
What was actually compared?
Serial dense SciPy quadratic eigenvalue problem.
4, 8, 16 and 32 BEAM2 elements at 0, 100 and 250 rad/s.
Straight circular isotropic shaft, fixed global spin axis, small perturbations, no damping or prestress.
Scope boundaries
Where the evidence stops
Internal mesh convergence is not physical validation.
No forced response, unbalance amplitude, instability or validated critical speed prediction.
Variable speed, shaft gyros, general damping, contact, nonlinear rotors and distributed execution are outside scope.
Recorded observables
Displayed values are rounded. Exact values, threshold definitions and original execution identities remain in the source records.
Observable
Recorded value
Frozen threshold
Maximum relative frequency delta, 16 to 32 elements
1.1432899e−4
0.005
Maximum relative QEP residual
1.61735001e−9
1e−8
High frequency pair at 100 rad/s
Ambiguous association preserved
Read the source contract
Open the original records.
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