Harmonic Drive RSF supermini Series - Moment of Inertia of Circular Cylinder

A-2 Moment of inertia
A-5
10
11
付
付
4
5
App
Appendix
2. Moment of inertia of circular cylinder
Approximate values of moment of
inertia of circular cylinder can be
calculated from the graph on the
right.
The top graph is applied to
aluminum (density 2700) and
the bottom graph, to steel (density 7850).
(Example)
Material: Aluminum
Outside diameter: 100mm
Length: 7mm
Shape: Circular cylinder
Outside diameter: 100mm
Since the outside diameter is 100mm,
the radius is 50mm.
Based on the top graph, moment of
inertia is about 1.9 x 10
-4
kgm
2
.
(Calculated value: 0.000186kgm
2
)
Radius
Length
1000
100
10
1
0.1
0.01
0.001
10
-4
10
-5
10
-6
10
100
1000
20
30
50
70
200
300
500
700
Moment of inertia (Density 2700)
Moment of inertia (kgm
2
)
Radius R(mm)
Length (mm)
1000
100
10
1
1000
100
10
1
0.1
0.01
0.001
10
-4
10
-5
10
-6
10
100
1000
20
30
50
70
200
300
500
700
Moment of inertia (Density 7850)
Moment of inertia (kgm
2
)
Radius R (mm)
Length (mm)
1000
100
10
1