Whenever I try to add a surface or a volume region to a subcomponent of an assembly, it fails. In order to add the surface/volume region, I must open that part by itself and add the surface/volume region there. However, the location of my surface region in one component is dependent on the position of other components within the assembly. This makes locating the surface/volume region very annoying. Does anyone else have this headache?
Check your external reference settings. This may be preventing you from doing it in the assembly.
Hope this Helps,
I don't have any restraints on external referencing in my settings, that I can see. Were you thinking of a specific option that might cause this problem?
When you add a surface or volume region at the assembly level it will be stored in the part file but you should be able to define it at the assembly level.
Do any of the parts have features created with a module requiring a floating license?
See if your settings are are simalar to these below.
File > Options > Assesmbly >
Our first option is set differently. It looks like if I set it up your way, any components I would change are backed up to the directory I'm working in, so as to not change the original file?
That option should not create any additional files. It should only allow the reference to be copied into the model so the parent model won't be needed in session and allow you to uncheck Dependent in the options.
Once you have created your sketch for the surface/volume region I would delete any reference other components/subassemblies so no external reference exist.
Hope this helps,
Using this option doesn't seem to change anything. I need to add the region at the component level still. I think it's a Windchill issue.
Im running into a similar issue. I have three parts (all Sheet metal). I can assign a surface region on one part, but the other two give me a "Geometrical Reference Error" and cannot proceed. I can add teh region to the parts individually, but not in the assembly.
Surface regions are stored in the part files, not in the assembly file. To avoid external references it's better to create the surface or volume regions in the part files.
Then why can I add it to one part, but not the other two? I'll assume it has somethign to do with adding eh reagion to eh first part, the grounded part, the 'default' constrained part.
Is it the same part that you are trying to perform the function too?
Are the parts mirrored?
There may be an external reference that is only available at the assembly level that is interfering with the creation of the surface region.
My guess is that there is a feature/reference at the assembly level that is interfering.
You can't create a surface or volume region at the assembly level if there is an assembly-level cut - BUT, you can use "Solidify" to make an assembly-level-like cut in your model (my need for this is typically for symmetry use) ... then you can make a surface or volume region in Simulate. Of course, there will be cases where you cannot use this approach if the model requires assembly-level cuts to represent your real process.