I'm working on a fairly large assembly. It has some parts and some subassemblies within it. I have assigned mass properties to each part and subassembly so that I can have a weight for the overall assembly. The only problem is that when I'm in the overall assembly and click Tools-> Mass Properties it only shows the cumulative weight for the parts, it does not include the subassemblies. Anybody know how to fix this?
Yes, I get what you are saying. I am just selecting the Full Assembly to get the mass properties. Attached is a picture of the results it gives me if I check the mass properties for the full assembly. As you can see only a few of the items are included in the weight. For instance, the first item "10-1432 Skid" is not included in the "Components that have been assigned mass properties list" even though I have assigned a mass property to this sub-assembly. Below it is the results if I click the subassembly. Let me know what you think.
That does look a bit odd. You might try building a few simple parts and assy's to test with very simple block parts. See if you can repeat it and if so, send it in.
WT
I noticed in your PDF that there is a rebuild sign on some of the items in the tree. Try doing a CTRL-Q master rebuild and see if this clears up the problem.
Regards,
David O.
D.W.,
I've never like assigning mass properties. As I recall, you can't get moments of inertia when you have assigned a mass. I don't really know that it is assigning mass properties to parts and subassemblies that is causing problems for you, but I am very suspicious. I usually fiddle with the density of parts and subassemblies to force the mass to the expected value, rather than just assign the mass. You might try it and see if it helps.
Jerry Steiger
Make sure you don't have anything selected when you ask for mass properties. That is the only time that I have seen where mass properties are not correct in adding all geometry. If you select one or two parts and then ask for mass properties, it evaluates only those parts selected. So just as a test you might select one of the sub-assemblies in the assy and see what it gives you for mass properties. That might provide a clue.
WT