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Incident pressure field, can't set frequency?
Posted 14 avr. 2016, 15:35 UTC−4 Acoustics & Vibrations, Structural Mechanics Version 5.2 3 Replies
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Hi all,
I am trying to apply pressure waves to a mass contained in a closed volume in order to make it vibrate. So far I got it to vibrate, but I can't seem to find a way to set the frequency of the waves. Is there any way to set the frequency of the applied waves?
I can add my model if that can clear things up more.
Thanks in advance.
I am trying to apply pressure waves to a mass contained in a closed volume in order to make it vibrate. So far I got it to vibrate, but I can't seem to find a way to set the frequency of the waves. Is there any way to set the frequency of the applied waves?
I can add my model if that can clear things up more.
Thanks in advance.
3 Replies Last Post 16 mai 2016, 15:27 UTC−4
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Posted:
9 years ago
are using frequency domain or eigen frequency ??
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Posted:
9 years ago
I am using a time dependent study
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Posted:
9 years ago
Hi
It is not exactly clear how your model looks, but if it is a structure surrounded by a fluid then you should do as follows:
1) Use the multiphysics coupling to couple the solid and fluid
2) Add a radiation condition at he exterior boundary of the fluid
3) Add an incident field to the radiation condition
4) Define an incoming wave of the type: sin(2*pi*f0*t-k0*x) - in this case a wave moving in the x-direction. f0 is the frequency you would like to use, and k0 the wave number. Define these as Parameters for example.
I suggest you look in the documentation for the radiation condition and the incident field features, or just turn on the dynamic help by clicking F1.
It is not exactly clear how your model looks, but if it is a structure surrounded by a fluid then you should do as follows:
1) Use the multiphysics coupling to couple the solid and fluid
2) Add a radiation condition at he exterior boundary of the fluid
3) Add an incident field to the radiation condition
4) Define an incoming wave of the type: sin(2*pi*f0*t-k0*x) - in this case a wave moving in the x-direction. f0 is the frequency you would like to use, and k0 the wave number. Define these as Parameters for example.
I suggest you look in the documentation for the radiation condition and the incident field features, or just turn on the dynamic help by clicking F1.