Acoustic FEA Analysis
Acoustic FEA Analysis
(OP)
Hi,
I'm looking for a good tutorial on performing low frequency acoustic response analysis via Nastran (structural vibroacoustic response of panels to acoustic loading, etc). Does anyone know of any good tutorials or textbooks that go over this topic? I'm looking for something that will have some theory (at a high level) and practical implementation via FEA.
Thanks much,
Dan
I'm looking for a good tutorial on performing low frequency acoustic response analysis via Nastran (structural vibroacoustic response of panels to acoustic loading, etc). Does anyone know of any good tutorials or textbooks that go over this topic? I'm looking for something that will have some theory (at a high level) and practical implementation via FEA.
Thanks much,
Dan





RE: Acoustic FEA Analysis
M
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Dr Michael F Platten
RE: Acoustic FEA Analysis
Any suggestions (tutorials, textbooks, webpages, etc)?
Thanks...
RE: Acoustic FEA Analysis
BUT, as I am an aerospace chappy (and acoustic engineer) I'll tell you it is not a purely random excitation - even from turbofans.
I recommnend you dig out a book by E.J. Richards and Denys Mead called Noise and Acoustic Fatigue --- otherwise known as the bible (to us acoustic engineers, at least).
For coupled fluid structure interaction, Nastran uses a body-in-white appraoch and doesn't do anything sepctacularly clever to write the coupling matrix between structure and fluid.
For Nastran:
1) all fluid dofs with -1
2) fluid and structure must have UNEQUIVENECED nodes
3) if you don't have bodyinwhite licence, you need a mapped mesh. i.e. same mesh on acoustics as on structure
RE: Acoustic FEA Analysis
Cheers
Greg Locock
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RE: Acoustic FEA Analysis