von Mises Truss — Snap-Through Explorer

Series E · E3 — reduced 0D model, recomputed live in JavaScript from the same equations as the Python solver

Geometric parameter
H / B (shallowness)0.700
θ₀ = 35.0° · B = 149.05 mm · H = 104.36 mm
w — current apex displacement0.0 mm
Moves the cursor along the curve and deforms the schematic below.
Material (comparison)
Measured constants (read-only)
Physical bar (fixed)
L0 (=L)
Lr (per end)
Lm (deformable segment)
A0 (cross-section)
Mooney-Rivlin (proxy)
a
b
c
Linear (comparator)
EA_eq = dNMR/dλ|λ=1
Curves recomputed live. Constants a, b, c: surrogate Pelliciari et al. 2023 (same specimens/rig as Falope et al. 2021, not the original table — see SOURCES.md in the solver).
P(w) — vertical mid-span load vs apex displacement
Linear — N = EA(λ-1)
Mooney-Rivlin (rubber)
Unstable branch (dP/dw<0)
current w
Schematic — deformation of the vertical axis as w varies