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Spring Engineering

Accurate and effective spring design can only be accomplished in today's world using computer programs capable of running hundreds of simultaneous calculations. Following are just a few of the most basic formulas for getting a head start on compression spring design. Call us for design assistance. We can run a thorough analysis and assist you in designing the best spring for your application.

Spring Engineering Constant

Calculate a spring constant from the spring's geometry and shear modulus.

Spring Constant Formula Spring Constant Formula Spring Constant Formula

Spring Engineering Geometry

Calculate pitch, rise angle and solid height.

Spring Geometry Formula Spring Geometry Formula Spring Geometry Formula

Spring Engineering Force and Stress

Calculate the maximum force a spring can take and the shear stress with consideration to the Wahl correction factor.

Force and Stress Formula Force and Stress Formula Force and Stress Formula Force and Stress Formula

Spring Engineering Variables used in design formulas

Spring wire diameter d
Spring outside diameter Douter
Mean diameter of spring D
Young's modulus of material E
Max force at solid Fmax
Shear modulus of material G
Free length Lfree
Wire length Lwire
Solid height Lsolid
Maximum displacement Ldef
Maximum load possible Lmax
Wahl correction factor W
Spring Constant k
Active coils na
Total coils nt
Density of material p
Poisson ratio of material v
Rise angle of spring coils θ
Maximum shear stress τmax