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Spherical mapped coordinate system in a 2D-axisymmetrical problem

Posted Dec 9, 2010, 4:52 a.m. EST Acoustics & Vibrations, Structural Mechanics Version 4.0a 1 Reply

Morten Wollert Nygren
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I am trying to simulate a piezoelectric transducer shaped as the cap of a hollow sphere. This should be a 2D-axisymmetrical problems, since the cap is axisymmetrical.

The problem is that I would like the polarization of the piezoelectric material to be perpendicular to the surface of the cap (ie radial). I have tried to do this by aligning the piezoelectric material model with a mapped coordinate system where coordinate 1 = atan(R/Z), 2 = PHI and 3 = sqrt(R² + Z²), and the coordinates are forced to be othonormal. But the results are, in parts of the transducer, of by several magnitudes.

What is the correct way to create a spherically polarized material in a 2D-axisymmetrical problem?

I have searched the knowledge database and the program documentation, but haven't found any answers.
1 Reply Last Post Feb 4, 2011, 1:00 p.m. EST
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Hello Morten Wollert Nygren

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eli rezvan
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Posted: 1 decade ago Feb 4, 2011, 1:00 p.m. EST
hi dear friend


i have the same problem . i really need to how to spherical coordinate . the ivar said i shoud the knowldge base.
but i cannt use it.

its kind of u if send me this subject. if u find a solvent , iwill apprtiate if giud me also.


best regard

hi dear friend i have the same problem . i really need to how to spherical coordinate . the ivar said i shoud the knowldge base. but i cannt use it. its kind of u if send me this subject. if u find a solvent , iwill apprtiate if giud me also. best regard

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