Measure Bodies

[junfanbl]

How exactly does NX calculate it's centers of gravity when you run Measure Bodies on parts and models?

 

[JohnRBaker]

When you say "How exactly does NX calculate it's centers of gravity...", are you asking, "How does NX go about computing the center of mass?" or are you asking "How can I change the accuracy of the results?"

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[junfanbl]

I am wondering how it calculates the CG's. I am using measure Bodies particularly for calculating volume and CG's. I am just not sure how it knows where the centers of gravity are. I am pretty new to using NX and I am curious to how it calculates these things.

 

[WayneWatkins]

I would assume that, because it knows the volume and density of your bodies, it just does the necessary calculus.

http://mathwiki.ucdavis.edu/Calculus/Vector_Calculus/Multiple_Integrals/Moments_and_Centers_of_Mass

Wayne Watkins, P.E.
Mechanical Engineer

 

[BubbaK]

You could start by reading

Computation of global geometric properties of solid objects
H.G. Timmer, J.M. Stern
Computer-Aided Design
Volume 12, Issue 6, November 1980, Pages 301–304

http://www.sciencedirect.com/science/article/pii/0010448580900937

 

[junfanbl]

Sweet!, thanks for the links guys. I appreciate it.