I need weight (volume/length or basically area times density) and statical values (Ix, Iy) of varied profiles for quotes. I started noting differences in different software - for the same profiles, from the same .dwg. So who do I believe?
Attached are the massprops of AutoCAD Mechanical, Inventor and Solidworks of a basically rectangular profile of 217 mm x 10 mm. (with r=0.5 mm fillets on the corners). In Inventor and Solidworks I basically extruded it 1000 mm.
Ok, area should be about 217x10=2170 mm^2 (minus the fillets, about 0.05 mm^2 each) and Ix=217x10^3/12=18083 and Iy=10x217^3/12=8515261 ... according to my minimal understanding of such things combined with my calculator.
Now, I just don't see much of these numbers in Inventor or Solidworks... am I looking wrong or calculating wrong or which one is actually accurate?
Solved! Go to Solution.
Inventor & SW are giving you the properties of the whole 1 m bar, not a cross-section. For example, the area given is the entire surface area of the bar, not just one end. And the moments given by Inventor & SW are mass moments, not area moments.
Thank you, that makes sense.
Any way to let Inventor give me the area moments etc? It is what software our customers use needs to see if constructions are according to norm.
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