Inventor General Discussion

Inventor General Discussion

New Member
Posts: 1
Registered: ‎07-26-2012
Message 1 of 2 (314 Views)

Area moment of inertia round off error

314 Views, 1 Replies
10-15-2012 03:31 PM

I have a problem with Inventor pro 2013 rounding of the area moment of inertia to zero (region properties). For example if I create a new sketch and draw a 1 mm x 0.5 mm rectangle and measure the area moment of inertia it will be 0 for one of the pricipal axes. If I change the rectangle to 1 mm x 0.6 mm it doesn't round it off. Seems like there's a problem with the precision in the calculations somehow. 


I have tried to change the document units to microns but the same thing happens.


What is wrong? or more importantly is there a way to make inventor do this calculation correctly?

Product Support
Posts: 262
Registered: ‎10-29-2008
Message 2 of 2 (285 Views)

Re: Area moment of inertia round off error

10-17-2012 06:19 AM in reply to: mibson

I've test out your issue as discribed and in my case the data updates with the changes. Please check and see if you have SP1.1 loaded and let us know it can be found at

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