soniumShowcase · solid
Necking Bar
A steel bar pulled in tension necks down at a slight imperfection once the Considère strain is passed. Colour is axial logarithmic strain; the profile is the computed cross-section, revolved for display.
Finite-strain J2 plasticity with Voce hardening under Newton equilibrium —
and one of the six explicit-dynamics decks run head-to-head against
OpenCourant, so the same model carries both a film and a benchmark number.
Regenerate the film with just website-demos necking.