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CAD tip CAD tip # 8841:

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Q - question

Quadratic moment of inertia of an Inventor part.

A - answer You can calculate the quadratic moment of inertia of a section - Jx and Jy - with the Beam calculator in Inventor.

In the assembly environment, click in the ribbon on Design > Frame > Beam/Column calculator (under the arrow) and in the calculation dialog choose an object or a profile shape. The section area, modulus (W), moments of inertia (second moment of area), torsional rigidity (Jk) or shear displacement can be found in a table:

Inertia

Another place where you can examine moments of inertia of arbitrary shapes is the Measure region tool in the Inventor sketch environment. Draw a sketch of the section and use the ribbon function Inspect > Measure > Region to display the "Region Properties" windows. Here you can select your sketch loop and click the Calculat button to calculate and display the centroid, principal moments, inertia tensors, radii of gyration:

Sketch - inertia (CZ version)

Inventor2013Inventor2012
100% *  CAD 
5.10.2012    3687x  
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applies to: Inventor 2013 · Inventor 2012 ·

See also:
Tip 8927:How to exclude parts of the Inventor assembly from total mass?
Tip 7023:Section modulus of 2D profiles in AutoCAD.
Tip 1183:How to get the center gravity of an area?


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