Measure Inertia 1

[eliou]

Hi,

Does anyone know what the different parameters in the inertia matrix means? For example what the IoxG, IxyG..etc stand for?

Thanks in advance!

 

[rgmidway]

I believe the Io(x,y,z) is the Area Moment of Inertia (used in bending calculations), while the I(xy,xz,yz) is the Mass Moment of Inertia.

 

[eliou]

Thanks for the great answer.

So would Iox be the inertia along the "x" direction and Ixy be the inertia on the xy plane?

 

[rgmidway]

That's right. The plane is defined because mass moment of inertia is rotational.

 

[eliou]

thanks alot rgmidway. Would you also happen to know what the Inertia / G tab stands for? I know the other ones (inertia / o...inertia p ) are measuring with respect to a origin or a point. Is inertia / G with respect to gravity?

Thanks

 

[rgmidway]

You're welcome eliou This one I have to just assume is gravity...I don't know what else it would be.

 

[eliou]

I can really see the benefit in measure the 3D inertia of a model, does anyone know why someone would want to just measure the 2d inertia of a face on a solid? Does it have any specific applications for which it is useful?