In: Mechanical Engineering
A compression spring has a diameter of 0.67 in and a coil
diameter of 0.067 in, with 30 total coils.
The spring is to be made of unpeened HD A227 wire and have squared
and ground ends. Find the
fatigue factor of safety when repeatedly cycled from 0 to 10.3 lbf.
Use the Gerber fatigue criterion
and the Zimmerli data.