Frequency Analysis of a rotating shaft

Aim :

To find the critical frequency of rotating shaft.

What is resonance?

Resonance describes the phenomenon of increased amplitude that occurs when the frequency of a periodically applied force (or a Fourier component of it) is equal or close to a natural frequency of the system on which it acts. When an oscillating force is applied at a resonant frequency of a dynamical system, the system will oscillate at a higher amplitude than when the same force is applied at other, non-resonant frequencies

Link for the model:

https://drive.google.com/drive/folders/1GPHEFwhFi-uWoY0gubsY1Rrl3GQ7b5a7?usp=sharing

3D model with fixture:

Dimensions:

Material: Alloy Steel

Mesh: Basic Mesh

Amplitude1:

Amplitude-2:

Amplitude-3:

Amplitude-4:

Amplitude-5:

Resonance Frequency Table:

Conclusion: