# Spiral torsion springs (given the force on spring)

## Values for calculation

## Calculation

### Tensile stress

### Safety factor

### Spring deflection

### Spring angular deflection

### Spring stiffness

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$$σ=\cfrac{32\cdot r\cdot F}{π\cdot d^3}$$

$$σ\le σ_{adm}$$

$$S_F=\cfrac{σ_{adm}}{σ}$$

$$f=\cfrac{2\cdot r\cdot L}{E\cdot 10^3\cdot d}\cdot σ$$

$$φ=\cfrac{f}{r}\cdot\cfrac{180}{π}$$

$$k=\cfrac{F}{f\cdot 10^{-3}}$$