characteristic mode analysis on dielectric object

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi,

 I am trying to perform a characteristic mode analysis on a dielectric cube but I am getting the error below:

 ERROR 37590: The characteristic modes that were calculated are all non-radiating

 

Do you know how to resolve this problem?

 

Regards,

 Constantine

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Answers

  • Wilco Strydom
    Wilco Strydom New Altair Community Member
    edited December 2019

    Hi Constantine,

     

    Performing CMA on a model with Surface Equivalence results in a combination of real and fictitious modes.
    Fictitious modes are identified and filtered out by verifying the modal radiation condition, since these modes are non radiating.
    Internally we increase the number of modes calculated, but for some models there will be very many fictitious modes near resonance and the solver will terminate with an error if at any frequency it is unable to give at least one radiating mode.

     

    You can simply increase the number of modes requested and rerun the solver.

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