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The oscillation frequency is one of the most important parameters of piezoelectric buzzers.

We look into the buzzer dimensions to have it oscillate at the target frequency of 10kHz.

A piezoelectric disc is piggybacked on an aluminium disc with this buzzer.
The radius and the thickness of discs are the variables to optimize the design.
 

• To proceed further, please acquire the project file.
  
  Obtain this session's project file. (Right-click and choose 'Save link as')
   

• If you prefer to check just the coordination procedure, forward to the project below instead of the one above.
  It has the completed Femtet project and the JMP setup project, so the coordination can be checked immediately.
  
  Obtain this session's project file(JMP setup file included). (Right-click and choose 'Save link as')

The factors used here are "r_ceramic", "t_ceramic", and "t_metal". The levels are listed in the table at right.
r_metal is fixed at 8.

We use Central Composite Design (CCD15) with Response Surface Methodology.
 

• The factors are required to be defined as variables in Femtet.
   

• The variables are preset in the linked projects above.

* r_metal = 8