A compression spring has squared ends and is made of carbon steel wire. The mean coil diameter is .812 in., and the wire diameter, d = 0.088 in. The coil outer diameter is 0.90 in. The spring has a free length of 10.312 in., and 29 total coils.
(a) Calculate the pitch of the spring at the free length.
(b) Calculate the solid height for the spring.
(c) Calculate the deflection to compress the spring to its solid height.
(d) Calculate the spring constant for the spring.
(e) Calculate the energy stored in each helical spring after the spring compresses one inch.
(f) Determine the force to compress the spring to its solid height.
(g) Determine whether the spring will buckle before it reaches its solid height if the spring is unrestrained.
(h) Select a carbon steel coil spring material and determine if the spring is designed for infinite life if the force on the spring fluctuates from zero to 10 lb.