Printable reference · V0.7
Compression Spring Reference
A printable concept-stage reference for round-wire helical compression springs.
DIVE-LD reference desk
SpringsCompression Spring Reference
Geometry
Wire diameter d
Mean coil diameter D
Active coils n
Spring index C = D/d
Core relationships
k = Gd⁴/(8D³n)
δ = F/k
Kᵥ = (4C−1)/(4C−4)+0.615/C
τ ≈ Kᵥ·8FD/(πd³)
Geometry checks
- Free length
- Solid height
- Available travel
- End condition
- Buckling / guidance
- Coil clearance
Durability checks
- Mean and alternating stress
- Material allowable stress
- Shot peening / preset if applicable
- Corrosion and temperature
- Manufacturing tolerances