Spring Compression Formula

L 9 n n z 1 z 0 d mm limit test length of spring.

Spring compression formula. Spring resonance finally the lowest resonant frequency in hz of the spring is found from the simple equation where k is the spring constant from above and m is the spring mass see derivation. D wire diameter inches. The spring mass m can be found by weighing the spring or by finding the spring volume and multiplying by its material density. These formulas were elaborated and corroborated making it possible to calculate a compression spring design.

For compression springs you need two values. K constant pounds of load per inch of deflection. K gd 4 8nd 3 where. Hooke s law gives the force a spring exerts on an object attached to it with the following equation.

Hooke s law is a law of physics that 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 fs 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. Common for all types of spring calculation and calculated in the following order. Mean diameter and wire diameter. To calculate the amount of rate on a compression spring design based on physical dimensions including material type use the formula provided below.

This calculator requires a java enabled browser equation. Compression spring rate formula. Compression spring formulas are the algorithms engineers use to calculate certain compression spring parameters. The minus sign shows that this force is in the opposite direction of the force that s stretching or compressing the spring.

The compression spring formulas you are about to see are based on many years of research from the acxess spring staff. Spring rate is the master of your working load calculations. D wire size inches d mean diameter inches n number of active coils d d index correction g shear modulus of material. F kx.

G modulus of rigidity of spring material pounds per square inch. Load and spring rate. L minf l 9max s amin mm where the upper limit spring length in the limit state l 9max. The spring index formula requires that you have the following two measurements.

Calculation of spring output parameters. K gd 4 8d 3n. Whether you are calculating load or travel spring rate will always be required. There is a short formula to follow to calculate a spring s index.

In stock springs it can help you understand the coil stiffness or looseness and how stressed the spring might be.