The Contact stress and area problems set up like this. Picking calculation produces the outputs shown. Beam-section properties pop up with either of the beam modules, or can be accessed on its own.

All machinedspringcoils deflect under load. One advantage of machined springs with two or more integral coils is that there are redundant elastic elements in the event of failure, and a failed element ...

Factors influencing the proportioning of machine elements: stresses, deformations, and failure criteria as applied to shafts, springs, belts, bearings, gears. Design of Elements is a required course ...