Meshing exterior acoustic cavity for a motor assembly
Altair EmployeeHi sir,
Last time I performed acoustic analysis on stator. This time I need to do the same procedure for motor assembly. While I try to mesh the region between motor and 2D sphere using 3D tetra elements , my mesh is failing.
Please suggest how will I be able to mesh it.
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Answers
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Hello,
Can you please tell me how you are meshing the region and what exact error you are getting.
Also please refer to the below post. It may be relevant to you.
Thankyou
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Hi sir,
I tried by doing it the recommended way, but the problem is not resolved.
Can you have a look at the model and check what's wrong?
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Hello,
Please share the model.
thankyou
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Could you be able to arrange for any FTP link?
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Altair Forum User said:
Hi sir,
Last time I performed acoustic analysis on stator. This time I need to do the same procedure for motor assembly. While I try to mesh the region between motor and 2D sphere using 3D tetra elements , my mesh is failing.
Please suggest how will I be able to mesh it.
If you're looking for 'One-click-meshing-method' for your model, I would like to say 'Good luck' to you
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For a good mesh in this case, alot of work is needed.
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Hello,
Please go to 'Mesh>>Create>>Acoustic Cavity Mesh'.
There select outer sphere under 'Structure' and select the Motor Components under 'seats'. Keep the 'create hole elements' option on or off depending on your requirements and then click preview and then click 'mesh' in 'Acousticcavity browser'.
Please find a tutorial on this in the attached pdf. It is the last tutorial.
Thankyou
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That is for interior acoustics I think
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Altair Forum User said:
Your upload link is HTTPS, secured HTTP, not FTP !
HTTP/HTTPS and FTP are different protocols.
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Hi sir,
I sent the file again. Please confirm whether you got it.
Thank you
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Yes i have got the file, i will get back to you.
Thankyou
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Ok
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Sir anything on this?
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Hello,
I had a talk with some experts.
So to do this you need to have 2D elements everywhere (motor components and the outer sphere).
Then all the motor components should be under one component, there should be no gap or intersection between them and also there should not be any contact surfaces in them.
This means that all the motor parts should be treated as one component only in HM. It should be 2D meshed. Then there should be no gap, intersection or contact surfaces between the parts.
Thankyou.
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The motor has some air gaps inside.
So what could we do about it?
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You need to fill the gap with elements then only you will be able to get a proper mesh.
Thankyou
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is it possible to write script for this problem...instead of using existing one
1. it should fill the all gaps
2. it should be volume tetra mesh with big size element.
after selecting the exterior comp
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Sorry, I have NO your model, so I can't help.
Don't forget that script is not always the best solution.
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How about using cavity?
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