Spring Design ची गणना कशी करावी
Spring Design म्हणजे काय?
Spring design calculates stress and deflection under load. Springs store and release energy, used in many mechanical systems.
सूत्र
Calculate stress: τ = (16×D×F) / (π×d³) for compression spring
- D
- D value — Variable used in the calculation
- F
- F value — Variable used in the calculation
चरण-दर-चरण मार्गदर्शक
- 1Calculate stress: τ = (16×D×F) / (π×d³) for compression spring
- 2Deflection: δ = (64×N×F×D³) / (G×d⁴)
- 3Verify safety margin and fatigue life
Worked Examples
इनपुट
Spring wire d=5mm, mean dia D=40mm, N=10 coils, F=100N
परिणाम
Deflection ≈ 3.4 mm, stress ≈ 82 MPa
Typical mild steel spring
Common Mistakes to Avoid
- ✕Neglecting stress concentration factor
- ✕Using wrong wire properties (modulus G)
Frequently Asked Questions
Why does mean diameter matter more than wire diameter?
Spring stiffness proportional to d⁴ but stress uses d³; larger diameter dominates stiffness.
What causes spring failure?
Fatigue from cyclic loading, stress concentration at coils, corrosion.
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