Inertia Tensor
Inertia Tensor
(OP)
Hi,
i'm trying to get NX 7.5 give me the Inertia Tensor of a body.
I already found out that it wont give me that, it gives me only the Principal Moments of Inertia. O would be OK with that if I could figure out how to do it!
Analysis ---> Section Inertia Analysis
Then: What does Type mean?
Which faces do i select?
What does CSYS, WCS stand for?
The thing is, i can´t even get the Center of Gravity of my object right :(
I searched a few hours the web, but didn't find my answer...
Could anybody help me?
Thanks in advance!
PS: i could calculate by hand, but it is so much work for complex geometries...
i'm trying to get NX 7.5 give me the Inertia Tensor of a body.
I already found out that it wont give me that, it gives me only the Principal Moments of Inertia. O would be OK with that if I could figure out how to do it!
Analysis ---> Section Inertia Analysis
Then: What does Type mean?
Which faces do i select?
What does CSYS, WCS stand for?
The thing is, i can´t even get the Center of Gravity of my object right :(
I searched a few hours the web, but didn't find my answer...
Could anybody help me?
Thanks in advance!
PS: i could calculate by hand, but it is so much work for complex geometries...





RE: Inertia Tensor
If you are looking for the properties of a solid body, use Analysis -> Measure Bodies... If you check the Show Information Window option, it will return many results. Some results will be listed as (Centroidal) and others as (WCS); centroidal is the value about the body's CG, WCS is the value about your current WCS origin.
Analysis -> Section Inertia Analysis calculates the second moment of area. This value is used in calculations that depend on the cross-section shape of a body (e.g. beam deflection, shaft torsion, etc).
www.nxjournaling.com
RE: Inertia Tensor
The trick was checking the Show Information Window! Thanks!!