Libreng Engineering Tool #064

Helical Compression Spring Design Calculator

Mag-disenyo ng mga helical compression spring. Ilagay ang diameter ng wire, diameter ng coil, free length, aktibong coil, at shear modulus upang kalkulahin ang spring rate, maximum na load, shear stress, at solid height.

Spring Rate k Wahl Factor Auto-Calc
Quick presets

Results

Spring Rate k
Max Load at Solid (Fsolid)
Max Shear Stress τ (na may Kw)
Solid Height
Spring Index C
Wahl Factor Kw
Spring Profile

Spring Rate

Shear Stress na may Wahl Correction

Wahl Factor

kung saan ang C = D/d ay ang spring index.

Solid Height

MaterialG (GPa)Typical Use
Music Wire (A228)79.3General purpose, high fatigue life
Chrome-Vanadium77.2High-stress, shock loads
Stainless 30269.0Corrosion resistance
Phosphor Bronze41.4Elektrikal, hindi magnetic
Beryllium Copper44.8Non-sparking, conductive
Halimbawa — Music Wire Spring

Given: d = 4 mm, D = 30 mm, L₀ = 80 mm, n = 10, G = 79300 MPa

C = 30/4 = 7.5

k = 79300 × 4⁴ / (8 × 30³ × 10) = 79300 × 256 / 2,160,000 = 9.39 N/mm

Solid height = (10+2) × 4 = 48 mm → Travel = 80 − 48 = 32 mm

Fsolid = 9.39 × 32 = 300.5 N

⚠️ Note: Huwag kailanman i-compress ang isang spring hanggang sa solid height sa panahon ng operasyon. Idisenyong ang working travel sa ≤80% ng available deflection. Suriin ang buckling kung ang free length/mean diameter ay > 4.

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