ANSYS log file for diaphragm design

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Description

the diaphragm design is modeled in ANSYS by running an ANSYS log file written in ANSYS parametric design language (APDL).

The ANSYS log file is a text file that contains the ANSYS commands to create a certain design; it is an alternative way of using the Graphical User Interface of ANSYS.

 

3mm comb-finger diaphragm in ANSYS

3mm comb-finger diaphragm in ANSYS

 

Along with the file, there is one more file that is also written in APDL to extract geometry information;

This macro file with the file extension *.mac can be called in the ANSYS log file.

 

After obtaining three geometry files from ANSYS, Matlab is used to reorganize the geometry information in a form that C-language can handle. The M-file will load the three geometry files: “keypointcoords.txt”, “linekeypoints.txt” and “arealines.txt”.

Output Files

Running the file in Matlab will generate two output files: “skincoordinates.txt” and “stiffenercoordinates.txt”. These files contain the geometry information for the diaphragm skin and for the stiffener respectively.

 

 

This code has a document (181 pages) which describe the algorithm in detail.

Design of a 3mm Directional Microphone Diaphragm using COMSOL Graphical User Interface

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