Number of Active Coils in Helical Springs
| Autor: | Vogt, R. F. |
|---|---|
| Zdroj: | Journal of Fluids Engineering; May 1934, Vol. 56 Issue: 5 p467-472, 6p |
| Abstrakt: | Due to the torsional displacement between cross-sections of the helical spring bar or wire in the so-called dead or inactive coils on each end of the spring, the total deflection of the spring is greater than that which corresponds to the deflection of the free coils. The exact amount of the spring deflection corresponding to the influence of the “inactive” coils can be calculated for known loading conditions of the spring and can be closely estimated for all springs subjected to conventional spring-practise loads. The deflections of the end coils are calculated in terms of the deflection of active coils. A test to determine the actual number of active coils is suggested and examples are given. |
| Databáze: | Supplemental Index |
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