App description

Spring shear stress calculation

Enter the value, click on "Calculate" and the result will be displayed.

Calculation formula

\(t=\frac {8×F×D×K _m}{π×d^3}\)

\(K _w=\frac{4C-1}{4C-4}+\frac {0.615}{C}\)

• t = total shear stress
• F = axial force
• D = spring diameter
• d = spring wire diameter
• K _w=val factor
• C = spring index

Usage example

Input data: axial force F: 20 N; spring diameter D: 5 m; spring wire diameter d: 0.77 m, click "Calculate" to display the result.

Output: The total shear stress is 686.766 N/m²; the spring index, the winding ratio is 6.49331; the Val factor K_w is 1.23123.

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