Evaluate ERP at microphone location

Altair Forum User

Hi everyone,

I am working on a motor stator. Earlier I was able to find equivalent radiated power(ERP) on the surface nodes of the stator. But now I need to find the ERP in space or say at microphone location. How can I do that? 

Altair Forum User

Hi Mayur,

 

How this node will be connected to stutural element?

 

I will check if there is a way to get ERP grid participation. 

Altair Forum User

Ok sir

I think we may need to form an acoustic cavity. Not sure though 

Altair Forum User

Hi Mayur,

 

Yes, there should be a cavity to measure the response. 

Altair Forum User

How can I form the cavity sir?

Altair Forum User

Hi Mayur,

 

Maybe this will help you understand on how to get at microphone.

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Sir theoretically it's fine.

But how can we do it practically in optistruct?

Altair Forum User

Hi Mayur,

 

Please create a MSET with field grids and refer the same in RADSND where sound will be calculated.

Altair Forum User

The RADSND set is not reflecting in the subcase RADSND option where we need to specify RADSND set.

Altair Forum User

Hi Mayur,

 

Sorry for a late reply.

 

Which version of HyperWorks are you using?

 

Did you edit the loadcase and checked RADSND?

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

I am using 2017 

Yes I checked the option but the 'set' doesn't appear there

Altair Forum User

@Mayur Deshmukh

 

So you created a set with node(s) and when you refer here it doesn't appear?

 

Can you share the model file?

 

Please use the file transfer link in my signature to share the model file

Altair Forum User

Their was some problem with the software sir....this problem is solved.... Thank u for ur support