Anonymous
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08-05-2020
11:40 PM
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08-05-2020
11:40 PM
MASSPROP command vs Parallel Axis Theorem
Hello,
I've been trying to calculate the Moment of Inertia of this compound section:
Here below some data that I have used for my calculations. The centre-to-centre distance between the 2 trapezoids is 25 mm:
As you can see, Ixg calculated with the equation and Ixg calculated with the MASSPROP command of AutoCAD aren't the same. Both trapezoids have been drawn with polylines and I used the REGION command before using the MASSPROP command to give them a solid feature.
Can anyone please shed some light on this?
Thank you