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PML Error: Could not find any cartesian regions

Posted 14 mag 2013, 12:19 GMT-4 Structural Mechanics Version 4.3a 3 Replies

Ruzbeh
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Hi

I am new to PML. I am using Structural mechanics module to implement PML in a cantliver to determine the waves propagating to the PML. I am getting this error: Could not find any cartesian regions. My dimensions are in micro meter but using conversions to use it in meters. Please suggest what am I missing here.

Is there any model on PML using SM module?
Thank you.
3 Replies Last Post 20 mag 2013, 10:31 GMT-4
Sergei Yushanov Certified Consultant
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Posted: 1 decade ago 14 mag 2013, 15:31 GMT-4
Ruzbeh,

In structural mechanics, PMLs are available in frequency domain only.

If you are in SM time domain, you need to use Low-Reflecting Boundary instead.

Message “Could not find any cartesian regions” usually means that you are trying to impose PML to the layer that is not of rectangular shape.

Regards,
Ruzbeh, In structural mechanics, PMLs are available in frequency domain only. If you are in SM time domain, you need to use Low-Reflecting Boundary instead. Message “Could not find any cartesian regions” usually means that you are trying to impose PML to the layer that is not of rectangular shape. Regards,
Ruzbeh
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Posted: 1 decade ago 15 mag 2013, 06:13 GMT-4
Thank you for the reply. I was solving an eigenfrequency problem. I guess I need to go for freqeuncy domain analysis. But, my PML domain is a rectangular block.
Thank you for the reply. I was solving an eigenfrequency problem. I guess I need to go for freqeuncy domain analysis. But, my PML domain is a rectangular block.
Ruzbeh
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Posted: 1 decade ago 20 mag 2013, 10:31 GMT-4
I was wondering if elastic wave propagation is possible to simulate using SM. Do I need to couple wave equation to SM? Please advice. I am struggling with that.
I was wondering if elastic wave propagation is possible to simulate using SM. Do I need to couple wave equation to SM? Please advice. I am struggling with that.

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