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About the coupled structural-acoustic analysis when the body is in motion

- June 22, 2025 at 10:04 am
  
  Fumiyoshi Abe
  Subscriber
  
  If I want to simulate a coupled structure-acoustic analysis of a system in which a structural body is moving with time using Ansys Workbench Mechanical, am I correct in understanding that the “Coupled Field Time Transient Analysis” solver supports such an analysis?
  Also, when creating the geometry of the acoustic domain, is it necessary to hollow out the entire trajectory to match the motion trajectory of the structural body? Or is it sufficient to prepare a hollowed-out geometry of only the initial shape of the structural body?
  These are the questions I would like to ask. Thank you in advance.
- June 23, 2025 at 7:32 am
  
  Erik Kostson
  Ansys Employee
  
  Hi
  
  We do not have anything on this type of analysis as we always look at sound generation through structural vibrations of the structure (we do not consider rigid body motion).
  All the best
  
  Erik
  - June 23, 2025 at 11:27 am
    
    Fumiyoshi Abe
    Subscriber
    
    Thanks for answering. Doesn't Ansys also support if an object rotates in-situ? (Not moving in space, only rotating)
    - June 23, 2025 at 5:07 pm
      
      Erik Kostson
      Ansys Employee
      
      Hi
      What type of noise are you investigating - is it like rotating fan noise?
      All the best
      Erik

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