Effect of Transverse Forces on Shrink-Fit Assemblies

The effect of transverse forces (shear and bending moment) on shrink-fit assemblies is studied using isoparametric solid finite elements. The shrink-fit is simulated in the computer by keeping the coefficient of thermal expansion of one of the parts as zero and heating the whole assembly to desired temperature. The transverse forces tend to loosen the joint and if they are sufficiently large, joint effectiveness will be completely lost. Design guidelines are given for a minimum required fit in the presence of transverse forces. The difference between linear and higher order finite elements as far as nodal forces are concerned is also discussed.