Spring Design کا حساب کیسے لگائیں
Spring Design کیا ہے؟
Spring design calculates stress and deflection under load. Springs store and release energy, used in many mechanical systems.
فارمولا
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
مرحلہ وار گائیڈ
- 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
حل شدہ مثالیں
ان پٹ
Spring wire d=5mm, mean dia D=40mm, N=10 coils, F=100N
نتیجہ
Deflection ≈ 3.4 mm, stress ≈ 82 MPa
Typical mild steel spring
عام غلطیاں جن سے بچنا ہے
- ✕Neglecting stress concentration factor
- ✕Using wrong wire properties (modulus G)
اکثر پوچھے جانے والے سوالات
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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