Spring Wire Stress

formulas that use Spring Wire Stress

\(\large{ S = \frac{ 8 \; p \; D \; K }{ \pi \; d^3 }  }\)
\(\large{ S = \frac{ 8 \; n_s \; D \; K \; d_s }{ \pi \; d^3 }  }\)

Where:

\(\large{ S }\) = wire stress

\(\large{ D }\) = mean coil diameter

\(\large{ \pi }\) = Pi

\(\large{ p }\) = pitch

\(\large{ d_s }\) = spring deflection

\(\large{ n_s }\) = spring rate

\(\large{ K }\) = Wahl correction factor

\(\large{ d }\) = wire diameter