How to create Periodicity with AFM tool for 21 coils

Florian Semmler
Florian Semmler Altair Community Member
edited February 27 in Community Q&A

Hi everyone, 

I am starting to use Simlab, coming from Flux Environment. I tried to create an AFM Motor with the internal "Create AFM"-tool. My motor should have 21 Slots. The problem is that 360/21 * 3 Phases = 51,428571428571428571428571428571 and Simlab rounds this value to 51,4286. Therefore, I get the following error message when I want to create the periodicity. Is there a workaround for this problem? 

image

 

Thank you! 

Regards,

Florian

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Answers

  • Santhoshkumar
    Santhoshkumar
    Altair Employee
    edited February 22

    Hello Florian,

    I checked for a sample model and it is working fine.

    Could you please share the model? Will check and get back you.

    Thanks & Regards,

    Santhoshkumar

  • Florian Semmler
    Florian Semmler Altair Community Member
    edited February 22

    Sorry, I think it was not 100% clear. The combination of poles and slots are important. With 21 Slots and 12 Poles it is working because it create a 120 degree model. With 21 slots and 14 poles it is not working. Can you please recheck with this pole number ? 

    Thank you!

    Regards,

    Florian 

  • Arman Ahmad
    Arman Ahmad
    Altair Employee
    edited February 26

    Hello Florian,

    Thanks for reporting this problem with periodicity.

    The workaround is:

    1) Manually create an outer air region (infinite box)
    Example: Dark Green region

    image

    2) Create and assign all LBCs except periodicity, define solving scenario, format & execute options.
    Example: Magnets and Motion LBCs

    image

    3) Export and open in Flux, define periodicity - repetition number 7

    Right-click solution name -> Export and open in Flux

    image

    image

    4) Solve

    image

    5) Attach results

    Right-click solution name -> Attach Results -> point to the .h3d file in the solution folder to view results in SimLab.

    imageimage

    image

    Thanks & Regards,

    Arman

  • Santhoshkumar
    Santhoshkumar
    Altair Employee
    edited February 27
    Arman Ahmad said:

    Hello Florian,

    Thanks for reporting this problem with periodicity.

    The workaround is:

    1) Manually create an outer air region (infinite box)
    Example: Dark Green region

    image

    2) Create and assign all LBCs except periodicity, define solving scenario, format & execute options.
    Example: Magnets and Motion LBCs

    image

    3) Export and open in Flux, define periodicity - repetition number 7

    Right-click solution name -> Export and open in Flux

    image

    image

    4) Solve

    image

    5) Attach results

    Right-click solution name -> Attach Results -> point to the .h3d file in the solution folder to view results in SimLab.

    imageimage

    image

    Thanks & Regards,

    Arman

    Thanks @Arman Ahmad for the workaround.

    @Florian Semmler Please try the workaround and let us know.

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