When riveted plates slide on each other the rivets are sheared off.
These three simple stresses may act together, producing compound stresses, as in flexure.

When a bow is bent there is a compression of the fibres on the inner or concave side and an elongation of the fibres on the outer or convex side.

There is also a tendency of the various fibres to slide past one another in a longitudinal direction.

If the bow were made of two or more separate pieces of equal length it would be noted on bending that slipping occurred along the surfaces of contact, and that the ends would no longer be even.

If these pieces were securely glued together they would no longer slip, but the tendency to do so would exist just the same.