Stiffness for Quarter-Elliptic Laminated Leaf Spring Calculator

Calculate the stiffness $ k $ (N/m) using: $$ k = C \times \frac{E \, I_{\text{eff}}}{L^3} $$

* $ E $ is the modulus of elasticity (N/m²), $ I_{\text{eff}} = n \times \frac{b\, t^3}{12} $ (for $ n $ leaves), $ L $ is the effective length (mm, converted to m), and $ C $ is the quarter-elliptic correction factor.

Step 1: Enter Parameters

Modulus of Elasticity, $ E $ (N/m²):

e.g., 200 GPa = 200000000000 N/m²

Leaf Width, $ b $ (mm):

e.g., 50 mm

Leaf Thickness, $ t $ (mm):

e.g., 5 mm

Number of Leaves, $ n $:

e.g., 3 leaves

Effective Length, $ L $ (mm):

e.g., 1000 mm

Quarter-Elliptic Correction Factor, $ C $:

Default is 1.0 (adjust if needed)

Step 1: Enter Parameters

Calculated Stiffness