Electromagnetic and mechanical coupling

- August 19, 2023 at 4:06 pm
  
  sahua1
  Subscriber
  
  Hi, I am trying to evaluate the rotor stress of a motor due to electromagnetic force.
  I am getting different stress results if I choose surface force density and surface body density. Which one will be correct?
  I am using Ansys workbench and a coupling between Ansys Maxwell and static structural
  Regards,
  Ashsih Sahu
- August 21, 2023 at 12:12 pm
  
  Ashish Kumar
  Forum Moderator
  
  Hi,
  Can you show a snapshot of how both data are applied in the model? You can use validation to check if the load is imported correctly. Please see if the following links help:
  A problem in “tabular loading” of the imported body force density. (ansys.com)
  How to transfer the body force density from Maxwell Magnetostatic analysis to Mechanical Transit Structural Analysis system as an impulse loading - Ansys Knowledge
  Regards,
  Ashish Khemka
- August 21, 2023 at 3:00 pm
  
  sahua1
  Subscriber
  
  Thank you, Ashish.
  Please find the attached screenshot for more detail.
  I am doing a static analysis of a rotor as it is for a specific RPM.
  The examples you shared show transient analysis. Do you suggest carrying out transient analysis to evaluate stress due to electromagnetic force?
  Regards,
  Ashish Sahu
- August 21, 2023 at 3:04 pm
  
  sahua1
  Subscriber
  
  I selected all the surfaces of the rotor while using surface force density. And the full rotor body while using body force density option. Please let me know if you need any more details.
  https://courses.ansys.com/wp-content/uploads/2021/07/MAXW_GS_2020R1_EN_WS05.1.pdf
  I followed this tutorial for the analysis.
- August 21, 2023 at 7:21 pm
  
  sahua1
  Subscriber
  
  One more querry. How do we validate the imported load.
- August 26, 2023 at 12:15 am
  
  sahua1
  Subscriber
  
  Hi Ashish,
  Any feedback for me?
- August 28, 2023 at 5:35 am
  
  Ashish Kumar
  Forum Moderator
  
  Hi,
  When you right-click on Surface or Body Force Density you should see an option to insert Validation.
  Regards,
  Ashish Kumar
- August 31, 2023 at 1:01 am
  
  sahua1
  Subscriber
  
  Hi Ashish,
  
  I checked it does not show that option.
  Regards,
  Ashish Sahu
- August 31, 2023 at 4:44 am
  
  Ashish Kumar
  Forum Moderator
  
  Hi,
  
  Can you right-click on Imported Force and see if you can see the option?
  Regards,
  Ashish Kumar
- August 31, 2023 at 4:38 pm
  
  sahua1
  Subscriber
  
  Hi , I check there also. No option there as well.
- August 31, 2023 at 6:38 pm
  
  Ashish Kumar
  Forum Moderator
  
  Hi,
  Please see if the attached snapshot helps:
  Regards,
  Ashish Kumar

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