How can I obtain Frequency Response Functions from ANSYS software?

Click For Summary

Discussion Overview

The discussion revolves around obtaining Frequency Response Functions (FRFs) using ANSYS software, focusing on the methods and analyses required to achieve this. Participants explore topics related to harmonic analysis, transient analysis, and the application of time-varying forces.

Discussion Character

  • Technical explanation, Debate/contested, Homework-related

Main Points Raised

  • One participant requests guidance on obtaining FRFs from ANSYS software.
  • Another participant suggests performing a harmonic analysis over a range of frequencies and plotting displacement at a node of interest.
  • A participant inquires about the possibility of applying time-varying forces in harmonic analysis and questions if transient analysis could be used to obtain FRFs with MATLAB.
  • One participant asserts that harmonic analysis is suited for steady, cyclic conditions and questions the feasibility of obtaining a response function that accounts for both time and frequency variations.
  • A participant expresses a desire to obtain stiffness matrix and mode shape values from ANSYS software.

Areas of Agreement / Disagreement

The discussion contains multiple competing views regarding the appropriate analysis methods for obtaining FRFs, with no consensus reached on the best approach.

Contextual Notes

Participants have not fully defined the specific conditions or assumptions related to the types of analyses being discussed, nor have they resolved the mathematical implications of using different analysis methods.

arpwpagr
Messages
6
Reaction score
0
Hi all,
I want to get Frequency Response Functions from ANSYS software. Can anyone give me a guideline?

Thank you.
 
Engineering news on Phys.org
You're going to need to elaborate quite a bit more on what you mean exactly.

If you mean what I think you mean, you'll need to do a harmonic analysis over a range of frequencies. Pick a node of interest, and use the time-dependent processor to plot displacement over frequency.
 
I have time varying force. Is there any possibility to apply such type of load in harmonic analysis. I know transient analysis can do it. If load can't be applied in harmonic analysis, can I do transient analysis and is it possible to get FRF using MATLAB? Please help me.
 
Nope. A harmonic analysis is essentially a steady, cyclic condition. If you vary the force in time, then the response will not be purely cyclic.

So, we I mentioned before, you need to elaborate more. You want a response function as both a function of time and frequency?
 
I want to get stiffness matrix and mode shape values from ANSYS software. Please help me.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 4 ·
Replies
4
Views
1K
  • · Replies 2 ·
Replies
2
Views
10K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 6 ·
Replies
6
Views
4K