We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.

Ansys Innovation Space

FREE STUDENT SOFTWARE

Fin bodies modeled as shell showing very close frequency’s to each other?

- August 18, 2023 at 3:38 pm
  
  balaji.bp
  Subscriber
  
  I am having a structure which has almost more 200 fins(thickness 1.5 mm) on outer part, I have extracted the midsurface of this fins and used a shell bodies in Ansys mechanical. The Fins or shell bodies are connected to the base part using MPC contacts, after solving for modal results i am getting very frequencys which are very close to each other and that are related to these fin bodeis only, for e.g 1213 HZ, 1214, 1214.2 etc . I am using wrong element do i need to consider it as 3d body only or do i need to select different shell stiffness option like defualt option is Bending and Membrane shall i chnged it to membrane only?
- August 22, 2023 at 2:16 pm
  
  Ashish Khemka
  Forum Moderator
  
  Hi,
  How much difference do you expect between the frequencies? Say for 2 fins on a long surface, placed close to one another, I would expect similar frequency. Can you share a snapshot of the setup and results?
  Regards,
  Ashish Khemka

Viewing 1 reply thread

The topic ‘Fin bodies modeled as shell showing very close frequency’s to each other?’ is closed to new replies.