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Chapter 12: Problem 66

Search the Internet and list advantages of nitrogen cylinder springs compared to coil springs.

Short Answer

Expert verified
Advantages of nitrogen cylinder springs compared to coil springs include higher load-lifting capacity, compact size for limited space situations, and superior heat resistance. However, coil springs are typically less expensive, available in various shapes and sizes, and have a simpler design.

Step by step solution

01

Understanding Nitrogen Cylinder Springs

These are gas-filled springs which use the compression and decompression of gas to absorb and dissipate forces. Advantages often include: a) Force: Nitrogen springs can lift higher loads due to the high pressure of the nitrogen gas. b) Size: They can be more compact than equivalent coil springs, making them ideal for situations where space is limited. c) Heat resistance: They generally have greater resistance to heat, which is essential for high-speed, high-load applications.
02

Understanding Coil Springs

As mechanical devices which store energy and later release it to absorb shock or maintain a force between contacting surfaces. Like any other type of springs, coil springs have some advantages too. a) Cost: Coil springs are usually less expensive than gas springs. b) Variety: They are available in many different shapes and sizes. c) Simplicity: They have a simple design which sometimes can offer less room for error.
03

Comparison

Based on the understanding of the two types of springs where Nitrogen Cylinder Springs are high on performance but a bit expensive and space efficient while Coil Springs are less expensive and simpler design. The choice of spring type depends on the specific application and requirements.

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Most popular questions from this chapter

A full-elliptic leaf spring operates normally with a load that fluctuates between 100 and \(200 \mathrm{lb}\), but is to be designed for an overload that fluctuates between 100 and 300 lb. Total spring length is 24 in., \(h=0.1\) in., \(K_{f}=1.3\), and the steel to be used has \(S_{u}=180 \mathrm{ksi}, S_{y}=160 \mathrm{ksi}\), and \(S_{n}=80 \mathrm{ksi}\) (this figure pertains to the actual size and surface). (a) Determine the total width \(b\) required. (b) Show, on a \(\sigma_{m}-\sigma_{a}\) diagram the "operating points" for (1) machine turned off and spring supporting a static load of 100 lb only, (2) normal loads applied, and (3) design overloads applied. (c) Determine the spring rate.

A helical compression spring used for essentially static loading has \(d=0.100\) in., \(D=0.625\) in., \(N=8\), and squared and ground ends. It is made of ASTM A227 cold-drawn steel wire. (a) Compute the spring rate and the solid height. (b) Estimate the greatest load that can be applied without causing long-term permanent set in excess of 2 percent. (c) At what spring free length will the load determined in part (b) cause the spring to become solid?

Review the web site http://www.acxesspring.com. (a) List the common spring materials presented. (b) Which materials are listed as highly susceptible to hydrogen embrittlement? (c) What processes are stated as causing hydrogen embrittlement?

Figure P12.58D shows a clip, one end of which is shaped like a mouth full of teeth. The clip utilizes a steel helical torsion spring to pinch the end of a toothpaste tube. A clamping force \(F=4.5 \mathrm{lb}\) is adequate for a regular size toothpaste tube \((\equiv 2\) in. wide). The mouth of the clip is about \(1.25 \mathrm{in}\). long and should open approximately \(45^{\circ}\) when clamping the rolled toothpaste tube. Determine the spring diameter \(D\) and the number of turns \(N\), and assume that \(d=1\)-mm-diameter wire is used. Assume that the spring can be manufactured in whole turns. If for fatigue endurance considerations we are not to exert more than a maximum stress of \(\sigma_{\max }=9000 \mathrm{MPa}\) to the spring, verify that the configuration does not exceed this stress for a full open position of \(70^{\circ}\). If the stress condition is not satisfied, suggest a way to reduce the maximum stress without essentially changing the clip design.

Review the web site http://www.leespring.com. Select a plastic composite compression spring with an outside diameter of approximately \(1.0\) in., a free length of \(1.00\) in., and a wire diameter of \(0.085\) in. What are the (a) "to work in hole diameter", (b) load at solid height, (c) spring rate, (d) solid height, and (e) total number of coils?
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