Frequency Analysis of a rotating shaft using SolidWorks (Finite Element Analysis)

Aim:

To find the natural frequencies of a rotating shaft. Conduct a frequency analysis over the given rotating shaft and find upto 5 critical frequencies.

Objectives:

1. Create 3D model of the given model.
2. Setup a frequency analysis for the model.
3. Arrive at useful conclusions regarding natural frequencies of the shaft.

Model:

System parameters:

Fixture type: Bearing fixture

Meshing

Frequency analysis:

A basic frequency analysis is setup on the model created to output 5 values of natural frequencies.

Plots:

Mode shape 1

Mode shape 2

amplitude along x axis

Mode shape 3

amplitude along y axis

Mode shape 4

amplitude along x axis

Mode shape 5

amplitude along y axis

Results:

Conclusions:

Frequency analysis over the model is performed and 5 critical frequencies of the model is found out. The assembly in which the model is incorprated should be made sure not to have a natural frequancy nearing to any of the frequencies found out, so as to avoid catastrophic effects of resonance.