10-35: A helical coil compression spring is needed for food service machinery. The load varies from...

10-35: A helical coil compression spring is needed for food service machinery. The load varies from a minimum of 4 lbf to a maximum of 18 lbf. The spring rate k is to be 9.5 lbf/in. The outside diameter of the spring cannot exceed . The springmaker has available suitable dies for drawing 0.080-, 0.0915-, 0.1055-, and 0.1205-in-diameter wire. Use squared and ground ends, and an unpeened material. Using a fatigue design factor nf of 1.5, and the Gerber-Zimmerli fatigue-failure criterion, design a suitable spring.

Solve Problem 10–35 using the Goodman-Zimmerli fatigue-failure criterion.

Solutions

Expert Solution

This question can't be do within in 2 hours,so I am limited to only 2 hours per questions ,you can do same procedure for different diameter.

samet mamat answered 1 month ago

Next > < Previous

Related Solutions

An as-wound helical-coil compression spring with infinite fatigue life is needed to resist a dynamic load...

An as-wound helical-coil compression spring with infinite fatigue life is needed to resist a dynamic load that varies from 8.0 to 24.0 lbf at 45.0 Hz over a dynamic deflection of 0.3 in. Because of assembly considerations, the solid length of the spring cannot be more than 1.2 in. The spring should have squared and ground ends and is to be made from peened music wire. Upon closure, use a design factor of 1.2 guarding against yielding and a fractional...

Starting with a spring index of C = 10, design a compression coil spring of 302...

Starting with a spring index of C = 10, design a compression coil spring of 302 stainless wire with squared ends. The spring is to deflect y = 50 mm, for an applied force of F = 90 N and to close solid when ys = 60 mm. At closure, use a design factor of 1.2 guarding against yielding. Select the smallest diameter wire where wire diameters are available in 0.2-mm increments between 0.2 to 3.2 mm. For the design,...

A helical compression spring is wound using 1 mm-diameter music wire. The outside coil diameter of...

A helical compression spring is wound using 1 mm-diameter music wire. The outside coil diameter of the spring is 11 mm. The ends are squared and there are 12 total turns. (a) Estimate the torsional yield strength of the wire. (b) Estimate the static load corresponding to the yield strength. (c) Estimate the scale of the spring. (d) Estimate the solid length of the spring. (e) Is there any possibility for buckling?

Problem 10-3 A helical compression spring is wound using 2.5- mm -diameter music wire. The spring...

Problem 10-3 A helical compression spring is wound using 2.5- mm -diameter music wire. The spring has an outside diameter of 31 mm with plain ground ends, and 14 total coils. (a) Estimate the spring rate. (b) What force is needed to compress this spring to closure? (c) What should the free length be to ensure that when the spring is compressed solid the torsional stress does not exceed the yield strength? (d) Is there a possibility that the spring...

A compression spring has a diameter of 0.67 in and a coil diameter of 0.067 in,...

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.

A helical compression spring has 14 active coils and the free length is 12.5in. The outside...

A helical compression spring has 14 active coils and the free length is 12.5in. The outside diameter is 7/16 in and the spring has squared and ground ends. The end plates are constrained to be parallel. The material is music wire with presetting. The wire diameter is 0.042 in. Determine: (1) for static conditions compute the spring index, the solid length, the stress when the spring is compressed to the solid length. Check if static yielding occurs while the spring...

1 A steel helical spring carries a compressive load of 32.4 pounds at a deflection of...

1 A steel helical spring carries a compressive load of 32.4 pounds at a deflection of 0.25 inches. Maximum stress is 73240psi. The spring has 1.5 end turns. Calculate the value of c for the spring of minimum volume material. Calculate the value of d and choose the nearest standard wire diameter for the actual spring. Calculate the corresponding R and the number of active coils Nc. Also, calculate the material in the spring.

Design a straight ended helical torsion spring for a static load 200 N-m at a deflection...

Design a straight ended helical torsion spring for a static load 200 N-m at a deflection of 45 deg with a safety factor of 1.8. Specify all parameters necessart to manufacture the spring state all assumntions. You make the following design choices: *Use unpeened oil tempered wire with 40mm long, straight ends. The coil is loaded to close it * Design safety factory Nyd=1.8 *spring index C=11 *Yield Strength Factor K=0.85 *length of the ends L1=40 mm=L2 *Material choice =...

A spring was compressed by varying load from 100N to 350N. If the spring material is...

A spring was compressed by varying load from 100N to 350N. If the spring material is music wire, design the spring specifications and indicate its factor of safety against fluctuating stresses.Assume and state relevant parameters.

A constant pitch helical coil is made from a length L=7m of round conductor having a...

A constant pitch helical coil is made from a length L=7m of round conductor having a copper core with diameter d=0.1mm and covered with an insulation of thickness t=0.02m, by winding the conductor on a mandrel having a length Lm=120mm and a diameter dm=3mm and allowing equal leads for connection at the two ends, each with a length l=10mm Calculate the coil DC resistance if the electrical resistivity of copper is 1.72 µΩcm [marks 2] Calculate the coil inductance [marks...

Subjects