This calculator finds natural frequency of a spring whose one end is against flat plate and other end is moved by a cyclic sine-wave motion. Input parameters of wire diameter, spring diameter, number of active coils, spring rate and material density are required for the calculations.
When a spring is going to be used in an environment where there is a cyclic loading, the spring shall be designed to have enough margins between cyclic loading frequency and spring natural frequency. If not designed so, the resonance situation occurs. This will amplify the stress levels which are calculated for static case. To avoid resonance, the natural frequency of the spring shall be minimum 13 times (Ref-1) larger than cyclic forcing frequency.
| Parameter|| Value|
| Natural frequency of spring [f+]||星星动漫网高清字幕在线观看全集免费完整版第04集 ,喜爱夜蒲陈静TS在线观看全集免费完整版第03集 雪梨影院,女人正确手婬大结局在线观看全集免费完整版第47集 ---|| Hz|
| Maximum allowed cyclic loading frequency [floading]||---|
| Mass of the active coils [m]||---|
| Spring index [C*]||---|| ---|
| Spring outer diameter [OD]||---|
| Spring mean diameter [D]||---|
| Spring inner diameter [ID]||---|
Note 1 : + One end is against flat plate and the other end is moved by a cyclic sine-wave motion.
Note 2 : * Preferred index range is 4 to 12. Springs with high indexes tangle and may require individual packaging, especially if the ends are not squared. Springs with indexes lower than 4 are difficult to form [From Ref-1] .