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SUMMARY

This discussion focuses on using experimental modal analysis to determine the modal parameters of a beaker using a shaker. The user has successfully obtained Frequency Response Functions (FRFs) but is uncertain about the next steps to extract modal parameters. The circle fit method is mentioned as a preferred technique for this analysis, highlighting the need for clarity in applying this method to the beaker's modes.

PREREQUISITES
  • Understanding of experimental modal analysis techniques
  • Familiarity with Frequency Response Functions (FRFs)
  • Knowledge of the circle fit method for modal parameter extraction
  • Basic principles of vibration analysis
NEXT STEPS
  • Research the application of the circle fit method in modal analysis
  • Learn how to interpret Frequency Response Functions (FRFs) for modal parameter extraction
  • Explore software tools for experimental modal analysis, such as MATLAB or ANSYS
  • Study case studies on modal analysis of similar structures, like containers or vessels
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Mechanical engineers, researchers in vibration analysis, and anyone involved in experimental modal analysis of structures or materials.

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Hi,
I'm trying to use experimental modal analysis to determine the modal parameters of a beaker. I'm using a shaker and have successfully obtained FRF's (I think!) Has anybody got any idea what I've to do from here? I've read what feels like a million articles but can't figure out how to actually extract the modal parameters! I'm supposed to be using the circle fit method if possible but I'm so so confused. Thanks to anyone who can help.
 
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Are you trying to determine the modes of the beaker itself, or a liquid inside of it?
 

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