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2. Spring (device) - Wikipedia

   en.wikipedia.org/wiki/Spring_(device)

   Springs can be classified depending on how the load force is applied to them: Tension/extension spring The spring is designed to operate with a tension load, so the spring stretches as the load is applied to it. Compression spring Designed to operate with a compression load, so the spring gets shorter as the load is applied to it. Torsion spring

3. Hooke's law - Wikipedia

   en.wikipedia.org/wiki/Hooke's_law

   In physics, Hooke's law is an empirical law which states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, F s = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring.

4. Compression ratio - Wikipedia

   en.wikipedia.org/wiki/Compression_ratio

   For example, if the static compression ratio is 10:1, and the dynamic compression ratio is 7.5:1, a useful value for cylinder pressure would be 7.5 1.3 × atmospheric pressure, or 13.7 bar (relative to atmospheric pressure). The two corrections for dynamic compression ratio affect cylinder pressure in opposite directions, but not in equal strength.

5. End-face mechanical seal - Wikipedia

   en.wikipedia.org/wiki/End-face_mechanical_seal

   The spring keeps the elements tight against each other, maintaining the seal and allowing for wear. In mechanical engineering , an end-face mechanical seal (often shortened to mechanical seal ) is a type of seal used in rotating equipment, such as pumps , mixers , blowers , and compressors .

6. Series and parallel springs - Wikipedia

   en.wikipedia.org/wiki/Series_and_parallel_springs

   The following table gives formula for the spring that is equivalent to a system of two springs, in series or in parallel, whose spring constants are and . [1] The compliance c {\displaystyle c} of a spring is the reciprocal 1 / k {\displaystyle 1/k} of its spring constant.)

7. Compressive strength - Wikipedia

   en.wikipedia.org/wiki/Compressive_strength

   Tension tends to pull small sideways deflections back into alignment, while compression tends to amplify such deflection into buckling. Compressive strength is measured on materials, components, [1] and structures. [2] The ultimate compressive strength of a material is the maximum uniaxial compressive stress that it can withstand before ...