# Rectangular plate deflection
# Scope: Linear elastic plate scaling with a supplied boundary coefficient; not a general plate solve.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

span = 300 mm
thickness = 5 mm
pressure = 1000 Pa
modulus = 69 GPa
poisson = 0.33
coefficient = 0.004

rigidity := modulus*thickness^3/(12*(1-poisson^2)) [N*m]
deflection := coefficient*pressure*span^4/rigidity [mm]

check deflection budget: deflection <= 1 mm

scenario alternative: span = 240 mm