Hello all
      This is my first time to login this system. I have been doing some work on
piezoelectrically driven injector.  But I don't where to find the
theoretical solution formula for a cicular disk with all edges fixed which is
driven by a pirodic circular AC voltage on the two side of the polation
direction.That is application the AC voltage on the top and bottom of the
disk.Many thanks!
      Best regards!
     Sean
___________________________________________
Zhouyu
MEMS Centre , Beijing University of Tech
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