# Screw buckling load
# Scope: Euler pin-ended solid circular screw column.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

diameter = 12 mm
length = 0.5 m
modulus = 200 GPa
load = 1000 N

inertia := pi*diameter^4/64 [mm^4]
critical := pi^2*modulus*inertia/length^2 [N]
factor := critical/load

check buckling factor target: factor >= 2

scenario alternative: diameter = 9.6 mm