Mass moment of inertia of an irregular area

  • Thread starter garytse86
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Main Question or Discussion Point

Hi. Please help. I'm struggling to find the mass moment of inertia of an area.

Please see picture.

I already have the centroid of the area, and the exact area.

How would I find the mass moment of inertia of this area about its centroid?

I tried using AutoCAD, but it gives you the *area* moment of inertia which isn't helpful to me?

do you guys know any programs that find the mass moment of inertia of an irregular area for you?

Thanks A LOT.
 

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Answers and Replies

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Alibre can do that. I think Solidworks or Pro-E can too, but not sure.
 
FredGarvin
Science Advisor
5,050
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Pro-E and Solidworks will definitely do it. However, you could just start breaking it up into a lot of smaller parts and calculating it yourself. I would think setting a spreadsheet up wouldn't be too difficult, just time consuming.
 

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