Compression Coil Spring Constant - What is Shear Modulus? - by John Sinitsky

Compression coil springs are very popular and used in a variety of mechanisms. The design of such a spring often requires a calculation of spring constant – and choosing one that is appropriate. Spring constant depends on several values – wire diameter, spring diameter, number of coils… The choice of material also plays an important role in coil compression spring design – Shear Modulus is a variable in spring constant of coil compression spring. Differences between music wire and chrome-vanadium, stainless steel applications – there all discussed in this article.