material and practicle application for various types of spring
Answers
Answer:
The most common way to classify springs is by how load is applied to them. You’re probably familiar with the following:
Compression spring: designed to operate with a compressive load and found in shock absorbers, spring mattresses, mechanical pencils, and retractable pens.
Extension spring: designed to operate with a tensile load. An archetypical example is a Slinky, but these are also found in luggage scales and garage door mechanisms.
Torsion spring: designed to operate with torque (twisting force); powers every clothespin and mouse trap.
Explanation:
also,
Linear springs
Linear springs obey Hooke’s Law (F=k*x), which means that the force needed to extend or compress such a spring by distance x is proportional to the distance, as long as the force doesn’t exceed the elastic limit of the spring. Torsion springs obey an analogous version of Hooke’s Law (F=k*θ, where θ is an angle). In both cases, k is the spring rate, and it stays constant, no matter the spring’s deflection. This is why linear springs are also known as constant rate springs.
Variable rate springs
On the other hand, a variable rate spring doesn’t have the same spring rate throughout its axial length.A familiar variable rate spring is the cone-shaped compression spring, most commonly found in battery boxes. The fully compressed height can be as low as one wire diameter. Variable rate springs also have the additional benefit of being laterally stable and less prone to buckling.
Constant force springs
Self-explanatory by its name, a constant force spring requires nearly the same force, no matter how long the extension. Constant force springs are also called clock springs. This type of spring is usually a coiled ribbon of spring steel used in counterbalancing applications, such as height adjustment for monitors, and—you guessed it—clocks.
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