Learning Forum

[Nelge]

I have an extremely simple model of a cone rotating inside another bigger cone. The problem is the only shapes I can assign a motion band to, are either cubic or cylindrical. it wont accept a Conic shape.

"Error in mesh mapping on band, please check the potential problem in band setting.'

when I change the band shape to a cylinder and encapsulate all the objects, the simulation works. Also if I remove the outer cone and just put a cylinder band around the inner cone, again the simulation works fine.

Please help

[NKC]

That's a bit tough geometry for meshing.
Is the gap between the inner cone and outer cone the same throughout?
You can try the following.
Create two more dummy cones one between the band and inner core and the other between the band and the outer core.
If this didn't work. Create the band shape in a CAD tool with segments(this might be difficult to do in Maxwell directly) and then import and assign it as a band.
Regards Navya

[Nelge]

Thank you Navya Yes the gap between cones is the same.
I think I have done what you have suggested to put the extra dummy cones in, unfortunately I get the same error.
I then created a 12 sided pyramid or 'segmented cone' as the band. Run the simulation and I get the same error with the additional warning "Specified band is not a rotational object, unable to do band mesh. Will do regular mesh instead".
What I am ultimately trying to do is design a radial motor that has a slight angle, so that is is not exactly a radial flux machine but 'oblique' to the axis of rotation, that is why i'm playing with cones. Maybe ansys maxwell is not the software I am looking for?
any more advice and help is much appreciated.
screenshots show the extra dummy cones made in CAD and the segmented band

[HDLI]

Hello Nelge Navya is correct and we need to build segments in the Band surface first. Additionally, Non- Cylindrical is required to select in Motion. Thanks.

HDLI

[Nelge]

Thank you guys much appreciated! it works!