BUCKLING OF HELICAL SPRING
US Customary Units
INPUT DATA
Title
Free Length, L
o
in
Mean coil diameter, D
in
Modulus of elasticity, E
10
6
lb/in
2
Shear Modulus of elasticity, G
10
6
lb/in
2
RESULTS
VARIABLES
End condition constant
α
Slenderness ratio
λ
Limiting length , L
*
(in)
Critical deflection, y
cr
(in)
♦ Supported-Supported
0.5
1.5
5.25
0.44
♦ Supported-Hinged
0.7
2.1
3.75
0.97
♦ Hinged-Hinged
1.0
3.0
2.62
0.0
♦ Supported-Free
2.0
6.0
1.31
0.0