Natural frequency from time domain and frequency domain plot

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SUMMARY

The discussion focuses on determining the first and second natural frequencies from time domain and frequency domain plots obtained from an accelerometer measuring vibrations in a cantilever beam. Participants emphasize the importance of analyzing the frequency spectrum to identify resonant modes. A request for a plot of the frequency spectrum is made to facilitate further analysis and provide specific insights into the natural frequencies.

PREREQUISITES
  • Understanding of vibration analysis principles
  • Familiarity with accelerometer data collection techniques
  • Knowledge of frequency domain analysis
  • Experience with plotting and interpreting frequency spectra
NEXT STEPS
  • Research techniques for extracting natural frequencies from frequency domain plots
  • Learn about accelerometer calibration and data acquisition methods
  • Explore software tools for frequency spectrum analysis, such as MATLAB or Python libraries
  • Study the theory behind cantilever beam vibrations and resonant modes
USEFUL FOR

Mechanical engineers, vibration analysts, and researchers involved in structural health monitoring and dynamic analysis of cantilever beams.

kay10287
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Anyone have an idea to find a first and second natural frequency from time domain and frequency domain plot resulting from an accelerometer measuring the vibration in cantilever beam ?

Thanks very much :)
 
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Welcome to PF kay10287,

What have you done so far on this problem? Can you upload a plot of the frequency spectrum of the accelerometer measurement for us? I imagine that the first few resonant modes should be fairly obvious in a plot of the frequency spectrum.
 

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