design and modification inertia

[janlo1986]

Hello, guys, I'm designing a hull on catia v5 r21. at the moment I have to go insert the inertias, I need to let the software understand that many volumes are full of air and therefore obviously change the density and the rest! You know how to tell me how to do it? I read about some guides and tells me to get into the design mode, but it's clear to me how to access this mode. thank you in advance, hello

 

[doriano]

Hi.
If I have understood well enough that you go on the part and calculate the mass of the air and its centerpiece then on the point of the center create a sphere with the air mass and the inertias are right.