# Fit over temperature
# Scope: Free diameter expansion for two materials at the same temperature rise.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

hole = 10 mm
shaft = 9.98 mm
holeAlpha = 0.000023 K^-1
shaftAlpha = 0.000012 K^-1
rise = 50 K

clearance := hole*(1+holeAlpha*rise)-shaft*(1+shaftAlpha*rise) [mm]

check clearance remains positive: clearance >= 0 mm

scenario alternative: hole = 8 mm