Definition | Transfer of Axis | Area Moment of Inertia | Mass Moment of Inertia |
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The Radius of Gyration kx of an Area (A) about an axis (x) is defined as: | |||
equ. (1) | |||
kx | equ. (2) | ||
Where Ix is the Moment of Inertia about the axis (x), and A is the area. If no axis is specified the centroidal axis is assumed. | |||
Using the Perpendicular Axis Theorem and equ. (1) from above it can be shown that: | |||
equ. (3) |
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The Radius of Gyration kxx of a Mass (m) about an axis (x) is defined as: |
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equ. (4) | |||
k | equ. (5) | ||
Where I is the Moment of Inertia about the axis (x), and m is the mass. | |||
If no axis is specified the centroidal axis is assumed. | |||
Radius of Gyration Definition and Concept |
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Definition | Transfer of Axis | Area Moment of Inertia | Mass Moment of Inertia |