Troubleshooting Cantilever Beam Simulation in COMSOL

Click For Summary
The discussion focuses on troubleshooting issues with a cantilever beam simulation in COMSOL, specifically regarding eigenfrequencies and frequency response. The user reports a resonant frequency of 49 kHz but an unusually high z displacement of 3.33 m, raising questions about potential errors in boundary conditions or damping settings. Responses suggest that the amplitude of mode shapes in vibration analysis can be arbitrary and that the user should verify input units and constraints applied during simulations. Additionally, discrepancies between results from COMSOL and ANSYS are attributed to differences in mesh density and boundary condition application. Overall, the conversation emphasizes the importance of proper meshing and boundary conditions in finite element analysis for accurate results.
  • #31
I was wondering how would you solve this problem (Eigenfrequency Analysis) if you were to include ''air damping'' any user of COMSOL has any idea? because i kinda have the same problem. i want to include air damping in my eigenfrequency analysis...
 
Engineering news on Phys.org
  • #32
Lucas84 said:
First of all thank you very much for your help alephzero.

I've look at COMSOL help, and the input is in Hz as well as the results. However, I did a simulation on a wide range of frequency and here's what I got :

I have a question concerning performing the simulation over a wide range of frequency in comsol. You mentioned you could do it in the comsol, can you tell me how? When I did the eigenfrequency analysis, it shows me a set of frequencies from which I have to select but not the frequencies of my choice. Thanks for your response!
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 3 ·
Replies
3
Views
5K
  • · Replies 2 ·
Replies
2
Views
10K
  • · Replies 4 ·
Replies
4
Views
8K
Replies
2
Views
4K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 4 ·
Replies
4
Views
27K
  • · Replies 9 ·
Replies
9
Views
8K
  • · Replies 9 ·
Replies
9
Views
3K