modelling a filling
modelling a filling
(OP)
I have an assembly filled with potting compound.
I want to show this filler, but also calculate the volume/weight required to fill the assembly.
How do I create this lump of epoxy dependant on the inside shape of my casting, with the PCB and components subtracted from it? so it updates with any changes I make?
So far to me it seems I have to create an appropriate lump, then add a dependant boolean subtract for each part - I can't seem to just use my existing assembly to do that.
I bet there is something I'm missing.
I want to show this filler, but also calculate the volume/weight required to fill the assembly.
How do I create this lump of epoxy dependant on the inside shape of my casting, with the PCB and components subtracted from it? so it updates with any changes I make?
So far to me it seems I have to create an appropriate lump, then add a dependant boolean subtract for each part - I can't seem to just use my existing assembly to do that.
I bet there is something I'm missing.






RE: modelling a filling
surely there is a way to do it using the original assembly model...
RE: modelling a filling
RE: modelling a filling
Perform a "0" offset of any surface that would touch the filler. Splitline any face that would only be partially wetted. Close the volume with surfaces (planar, boundary, fill..) Knit into a solid. Mass properties.
I hope this helps.
Rob Stupplebeen
RE: modelling a filling
create a virtual component
then select parts you want to create as dependant geometry
insert feature join
select appropriate options.
Now you have multiple bodies of the relevant geomtry.
Extrude your filler as another feature, so it fills everything up. Perhaps this could be a mould inner cavity?
Then subtract the bodies that are inside the filler.
Job done.
RE: modelling a filling
Dan
www.eltronresearch.com
Dan's Blog
RE: modelling a filling
RE: modelling a filling
RE: modelling a filling
Dan
www.eltronresearch.com
Dan's Blog
RE: modelling a filling
The method I outlined is quicker becuase it uses the orignal assembly and is associative with it completely, though any additinoal parts have to be added to the virtual filler part in its "join" feature.
As always with replacing assembly parts with solid, there are usually a few fails with tangencies and corner/line contact causing a zero thickness solid error so you need to do some additional extrudes and approximations which is hassle. The complete "filler" part is not capable of having the likely true shape which will have zero thickness errors where circular parts touch with a tangent etc. So there need to be a few approximations made.
Sounds like an enhancement to do this more easily is needed!
CorBlimeyLimey, looks like I need to do something to my SW user account to get to the ideas section where I'm blocked :( just paid them $$$$$$$$ as well :(
RE: modelling a filling