Looking for "center of volume"

[No Name Given]

Anyone know how to do this in an assembly? I can do the center of gravity,
But I need center of volume to see how this assembly will float in water

Thanks

-Paul

[Arlin]

Post by No Name Given
Anyone know how to do this in an assembly? I can do the center of gravity,
But I need center of volume to see how this assembly will float in water
Thanks
-Paul

If all densities are the same, the center of volume and the center of
gravity are equal....

[Andrew Troup]

If the densities are different, try saving the assembly as a part, and
interrogating the mass properties of the resulting part
To save an assembly as a multibody part document:
1.. Open an assembly document.

2.. Click File, Save As.

3.. Set the Save as type to Part (*.prt, *.sldprt).

A set of options appears at the bottom of the dialog box.

4.. Select All Components to save all components as Solid Bodies

5.. Click Save.

Just beware (following advice is verified for v2003 sp3.1)

<<To evaluate (mass properties for) components or solid bodies in assembly
and multibody part documents, click the component or body, and click
Recalculate. If no component or solid body is selected, the mass properties
for the entire assembly or multibody part are reported.>>

This Help entry is misleading, as it does not explain that you need to
select the body from the feature tree (Solid Bodies folder) NOT from the
graphics area, to calculate the properties for individual bodies.

Post by No Name Given
Anyone know how to do this in an assembly? I can do the center of gravity,
But I need center of volume to see how this assembly will float in water
Thanks
-Paul

[TheTick]

Keep in mind that the center of buoyancy is constant only if the
object is submerged. If the object is floating, the center of
buoyancy is at the center of the volume of displaced water. This
center can shift as the shape of the displacement volume changes as
the floating object changes orientation (rocks, bobs, etc.).

Post by No Name Given
Anyone know how to do this in an assembly? I can do the center of gravity,
But I need center of volume to see how this assembly will float in water
Thanks
-Paul