Flexure Tool
Blade Flexure Sizing Calculator
Size a single blade flexure from length, width, modulus, maximum stress, and target deflection.
Inputs
Outputs
| Parameter | Metric | Imperial |
|---|
Equations
- Design strain:
epsilon = sigma / E. - Blade thickness:
t = epsilon L^2 / (3 delta). - Area moment of inertia:
I = w t^3 / 12. - Blade stiffness:
k = 12 E I / L^3. - Force at deflection:
F = k delta.
Assumptions
- Single rectangular blade flexure with small-deflection linear elastic behavior.
- Inputs use consistent elastic modulus and stress values for the selected material condition.
- Stress concentrations, fatigue, buckling, clamp compliance, manufacturing tolerances, and large-deflection effects are not modeled.