Free Vibration Analysis Tutorial — Lesson 5

This lesson covers the process of conducting a free vibration analysis of a composite cylindrical cell. The cell is made up of a cross fly laminate scheme and is considered as a thick shell. The lesson explains how to find the lowest natural frequency of the cell and visualize the mode shapes. It also compares the results with those presented by Chain ET al. The lesson further details the steps to model the component, set the working directory, create the new part, assign material properties, and assemble the shell. It also discusses how to set the boundary conditions, perform meshing, and submit the job for analysis.

Video Highlights

01:29 - Component model of the shell
02:52 - Steps for extrusion of the sketch
04:03 - Assignment of material properties to the plies
06:24 - Assembly of the shell
07:14 - Setting of the boundary conditions
08:11 - Explanation of the meshing process
09:07 - Submission of the job for analysis
10:20 - Review of the analysis data file in the working directory
11:40 - Visualization of the mode shapes

Key Takeaways

- Free vibration analysis can be performed on a composite cylindrical cell by understanding the correct procedure.
- Modeling of a component includes creating a new part, assigning material properties to the plies, assembling them together and setting up appropriate boundary conditions.
- The results obtained needs to be interpreted properly, which includes visualizing the mode shapes and comparing the results with existing data.