HyperWorks Solvers

Normal Modes Analysis of a Compressor Wheel

Normal Modes Analysis of a Compressor Wheel

 Previous topic Next topic No expanding text in this topic  

Normal Modes Analysis of a Compressor Wheel

 Previous topic Next topic JavaScript is required for expanding text JavaScript is required for the print function  

fvcompressor

Summary

Altair OptiStruct was used to run a free-free normal modes analysis on a gas turbine compressor wheel solid FE model.

 

Model

A solid hexa model of a gas turbine compressor wheel with fins was generated with Altair HyperMesh. The model contained 44,369 grids and 31,022 solid hexa elements. A free-free modal analysis was conducted using OptiStruct to find the first twelve natural frequencies.

 

Modal Analysis Results

The first six frequencies found were rigid body modes and can be disregarded. The frequency results can be found in the table below.

Mode #

Frequency

7
8
9
10
11
12

2.46
2.46
3.33
3.62
3.62
3.83

File Location

<install_directory>/demos/hwsolvers/optistruct/compressor.fem