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, specify the wire diameter, the inside and outside diameters of the coil, the spring rate, the total number of coils, the free length of the spring, the final factor of safety, and stability conditions.

Expert Solution

samet mamat answered 2 years ago

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.

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...

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...

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...

5 of industrial examples :(with photo) -compression spring

The force produced by a spring is always opposite to the direction of compression or expansion...

The force produced by a spring is always opposite to the direction of compression or expansion always opposite to the direction of expansion but in the direction of compression always opposite to the direction of compression but in the same direction as expansion always in the same direction as expansion or compression The 75.0 kg hero of a movie is pulled upward at a constant velocity by a rope. What is the tension on the rope? 7.65N 735N this problem...

Calculate the expected life of N (# of cycles) in a compression spring with the specifications....

Calculate the expected life of N (# of cycles) in a compression spring with the specifications. Material: 302 Stainless Steel End type: closed Overall Length: 2" OD: 0.5" ID: 0.406" Wire Diameter: 0.047" Wire Shape: Round Compressed Lenght: 1.35" Maximum Load: 3.8 lbs Rate: 5.85 lbs/in RoHS: Compliant

A 0.167-kg frame, when suspended from a coil spring, stretches the spring 0.0400 m. A 0.200-kg...

A 0.167-kg frame, when suspended from a coil spring, stretches the spring 0.0400 m. A 0.200-kg lump of putty is dropped from rest onto the frame from a height of 30.0 cm. Find the maximum distance the frame moves downward from its initial equilibrium position.

The receiving river in the spring months (with a temperature of about 10-15 °C) has no...

The receiving river in the spring months (with a temperature of about 10-15 °C) has no initial deficit in the outfall region of partially treated sewage with BODL of 18 mg/L and a decay coefficient of 0.21. Please locate the downstream river section where the maximum DO sag might occur. Will the water quality result in potential negative impacts on aquatic organisms in the river? Assuming that the re-aeration coefficient is 0.31 per day and the average water velocity is...

Question