Try this --
* make a part that is a cube big enough to contain your assembly - set its
material to something transparent like "Glass" -- save it and call it
"air.ipt"
* make an assembly containing "air.ipt" and your real assembly positioned
inside the "air" part -- save it as "assembly+air.iam"
* make a new part -- exit the sketch environment and do
"Derived Component" - choose "assembly+air.iam" -- click on the + in
front of "assembly:1" to change it to - (minus) meaning "subtract volume"
(it should turn blue) -- hit OK
* set the material of this part to something transparent like "Glass" and
you should see the hollow left by your assembly in the middle of the "air"
* save this part as "air-assembly.ipt"
Is that what you're looking for?
wrote in message news:5218347@discussion.autodesk.com...
To make an ANSYS analysis, I need to create a part resembling the air
between the parts in my assembly. How do I do this in Inventor?