Frequency Analysis of a rotating shaft

Objective:

Frequency analysis of a rotating shaft

Natural frequency:

The frequency at which the system tends to vibrate under the absence of applied force and damping force

CAD:

Description:

1.Draw the model radius of middel disk diameter=100,thickness=30mm

2.Total length of the shaft is 800mm

3.Create the section properties

4.Create the steel material properties young modulsus = 210 Gpa, density =7.9 e-9, poission ratio=0.3

5.Craete the fixed boundary conditions on both ends of the shaft

6.Requested frequency range 0-2000 Hz

7.Solve frequency analysis

Results:

Frequency 1: Bending mode along x axis

Frequency 2: Bending mode along Y axis:

Frequency 3: Bulging mode of rotor disc in x-y plane

Frequency 4: 3 point bending mode in x-axis

Frequency 5: 3 point bending mode along y axis: