Prevailing stresses at interference fit assembly...

[tokitalk]

Press fits assemblies are analogous to pressurized vessels (with internal and external pressure loadings).
However, even though they are primarily used in transferring torques, the prevailing stresses at these joints are wholly axial in nature: radial (compressive), tangential (tensile), and longitudinal (tensile).

Can someone explain why there are no shearing stresses (direct, torsional or transverse) at these connections?

 

[Cockroach]

Because in the Von Mises model, principle stresses are just that, shear equals zero by definition. You could apply Mohrs Sphere to rotate away from the principle plane to generate an equivalent shear component.

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada

 

[tokitalk]

Kenneth, if I follow your explanation, there are shear stresses at these joints, they are just not relatively high enough to matter?