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add mechanical damping, not convergence
Posted 2017年5月8日 GMT-4 09:16 3 Replies
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When I compute a piezoelectric transducer in a water domain, the solution works well and convergence. However, when I add mechanical damping to the piezoelectric material and keep others all the same, the solution can not convergence, I am wondering why?
have a good day.
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sandra wang
3 Replies Last Post 2017年5月9日 GMT-4 10:17
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Posted:
8 years ago
Hi Sandra,
You have not specified what type of study, or what type of damping, you are using when you get the problem. Without that, it is difficult to tell.
Regards,
Henrik
You have not specified what type of study, or what type of damping, you are using when you get the problem. Without that, it is difficult to tell.
Regards,
Henrik
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Posted:
8 years ago
Hi Henrik,
The study is frequency domain, I only add mechanical damping 0.05 to the piezoelectric material, then the model begin not to convergence in the solution. Although the damping value is very small, still not convergence, but if the value is zero, the model works well.
Best Regards
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sandra wang
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Posted:
8 years ago
Hi,
This is an anomalous behavior, since such damping should stabilize the model numerically. I suspect something is strange in the setup of your model.
Henrik
This is an anomalous behavior, since such damping should stabilize the model numerically. I suspect something is strange in the setup of your model.
Henrik