# Panel stiffness versus thickness
# Scope: Equivalent panel strip as a simply supported beam; no two-way plate action.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

span = 300 mm
width = 100 mm
thickness = 3 mm
modulus = 69 GPa
load = 20 N

inertia := width*thickness^3/12 [mm^4]
deflection := load*span^3/(48*modulus*inertia) [mm]

check deflection budget: deflection <= 2 mm

scenario alternative: span = 240 mm