Frequency Analysis of a rotating shaft

Aim :- To Create a model of a rotating shaft and to perform a frequency analysis on it.

Objective :-

• To create the model in Solidworks according to dimensions that you see fit
• Then Conduct the frequency analysis by applying a bearing fixture on the stepped face of the rod at the two ends
• Find out 5 mode shapes and list the resonant frequencies

Shaft Model :-

• The dimensions for the rotating shaft model is illustrated in the snap shown below

Procedure :-

• Firstly the rotating shaft model was sketched using suitable dimensions.
• Next continuing the FEA analysis on the shaft.
• The part material was selected as alloy steel.
• The bearing fixtures were used on the stepped face of the rod at the two ends.
• Mesh value was selected as 2mm fine mesh.
• Thus the results were obtained for 5 mode shapes.
• Below shown is the snap for the steps taken.

Mode Shapes :-

• The five mode shapes figures as-well-as animation video are shown below
• Mode Shape - 1

• Mode Shape - 2

• Mode Shape - 3

• Mode Shape - 4

• Mode Shape - 5

Result :-

• Thus we have studied the frequency analysis of a rotating shaft
• Modelled the rotating shaft in solidworks
• Performed the frequency analysis on the rotating shaft and obtained the results

The below shown is the list of resonant frequency for the 5 modes

Conclusion :-

• It is observed that Frequency seems to vary as the mode value changes
• The highest value for frequency is seen in mode 5