Acoustics-Experimental v/s Finite Element Modeling

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Acoustics-Experimental v/s Finite Element Modeling

Postby Dacoustics » Sun Mar 07, 2004 12:07 am

All,
I am Junior. I work in the field of Noise and Vibrations. More
focused on Noise (Acoustics).

I do Acoustic Testin for Automobilies and Bldg Components. I know
E90, C423, E596, E1050, SAE J1400, STL thru Sound Intensity Levels,
Acoustic Transperancy Tests, Damping Test, ISO 7779, ISO 3744, ANSI
S12.31, Prominent Tones, etc.. I have also done lot of Crash,
Impact, Vibration,CAE/FEM.. usin Hypermesh, Nastran, LS-Dyna,
ANSYS,SDRC IDEAS, Pro E..etc..

I wanan use CAE/FEM to do or predict some of the above acoustic real
time test. I had use very little knowledge of fea-acoustics.

As an example is it possible for me to predict or rate
(comparative study) the sound transmission loss of any material with
define geometry, material and boundary conditions ? Is it possible
to predict and rate the sound absoprtion coefficients of the
materials? Both the above from frequency range of 20-20KHz.

Guide me or share your knowledge, if FEA can achive this and could be
in good comparision with real-time acoustics test results.

Thanks
Junior
Dacoustics
 
Posts: 1
Joined: Sat Mar 06, 2004 11:53 pm
Location: Detroit, Michigan

Postby Eric.Desart » Mon Mar 08, 2004 10:55 am

Junior,

This is a typical question for the Usenet (Google) group:
alt.sci.physics.acoustics

Kind regards
Eric
Eric.Desart
Moderator
 
Posts: 2461
Joined: Tue Feb 10, 2004 4:29 am
Location: Antwerp, Belgium


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