Frequency Analysis of a Rotating Shaft in Solidworks

Aim: The goal of the project is to understand frequency analysis on a rotating body, the types, and the results that would be obtained from the said analysis.

Introduction:

Natural frequencies are the frequencies with which a body oscillates when no repeated or continuous load is being acted upon it.

Based on the natural frequencies, mode shapes are generated. Here, we are looking at generating the various mode shapes for the given object under no load and simple bearing support.

Model:

1. First, appropriate model dimensions are selected and the model is made.
2. Then, an Alloy Steel material is selected.
3. Bearing loads are added in the analysis section
4. Final setup (before mesh) is as follows:

Analysis:

Since we are attempting to analyze natural frequencies, an external load is not needed. Adding bearing support will suffice.

Comparison of Modes 1, 2 and 3:

Comparison of Modes 1, 4 and 5:

Resonant frequencies: