design of PMUT 回答済み

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• 正式なコメント

  

  Chloe Allison

  2020年09月01日 10:11

  Hi Mohammed,

  Welcome to the forum!

  There are a couple of ways you could create this geometry:

  • GDSII file - OnScale supports GDSII import
  • CAD - OnScale supports the importation of many types of CAD files (see cad command)
  • Primitive shapes - build the electrode from basic shapes (see site command)

  For building the electrode using basic shapes this would be quite complex, I would recommend one of the first two options.

  Best Regards,

  Chloe

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• 

  Mohammed Ba Sabbea

  2020年09月02日 03:18

  thanks for your reply.

  based on your answer .im not familiar with the analysis mode I am doing my work based on the design mode.

  I did the geometry-based on that  see figure below,  but I FACE  problem to define the electrode node as mention on the output file errors 

  "

  ****MKL: tbb threading

  ****Using Flex.key licensing

  Memory allocation:

  Numeric data- 100 million words ( 400 Mbyte)

  Character data- 100 thousand words ( 2 Mbyte)

  ********************************************************

  Damping matched at 1000000. Hz

  Redefine variable 'freqdamp' if device centre frequency

  varies significantly from this value

  ********************************************************

   

   

   

  **** PZFlex has detected an error****

  ****Subroutines tracked are: pizinp jobctl flex

  ****Error occurred in subroutine pizinp ****

  ****Error message****

  No electrode nodes defined

   

  WARNING: There were 2 warnings generated during this run

  "

  I want to define the loads as top and bottom electrodes the issue here I think with top electrode since it is divided into four sections how I can define the top electrode to run the simulation.

   

  hint: I am using free pakege 

   

  Your reply is appreciated

   

  Best Regards 

  

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• 

  Chloe Allison

  2020年09月02日 15:03

  Hi Mohammed,

   

  Could you zip all your files (including *.flxprt) and share them via your preferred file sharing service please and I can take a look. 

   

  Best Regards,

  Chloe

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• 

  Mohammed Ba Sabbea

  2020年09月05日 04:56

  Dear Chloe

  I have sent an email regarding this issue and really waiting for your reply which is highly appreciated 

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• 

  Oliver Mashari

  2020年09月11日 10:19

  Hey Mohammed,

   

  Sorry about the delay in reply. In regards to the question youy asked

  "I did follow up your recommendations but with circular membrane
  1- I add keypoints.
  2- I make the mesh more finer
  when I try to estimate, same problem show off."

  This is a similar issue to your square PMUT, keypoints are your friend here especially because the element size is so large currently I'd recommend keypointing the circular model along the x-axis and change the mesh configuration because as present the circular geometry isn't captured

  

   

  Oliver

   

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