If the funding returns I'd suggest you look at m+p's SO Analyzer at www.mpihome.com. Very nice to use, very cost-effective particularly as they can use National Instruments h/w.
I'd recommend the force transducer being at the structure end of the stinger, not the shaker end. Also, if you glue the force transducer to the structure you'll eliminate any undesirable forces due to tightening up.
Like a previous comment, I'd also suspect a damaged force transducer.
MTS is my preference from hammer testing through single-point and multi-point random to normal mode tuning. If you need large channel counts, <1000, look no further.
They also have a correlation product for test v. test, test v. analysis and analysis v. analysis correlation.
www.mts.com/nvd
You'll find a Campbell's Diagram on page 2 of the following link:
http://www.mts.com/nvd/Software/pdf/300225-01TransientPost.pdf
Not a very interesting example because there are no obvious resonances in what looks like a strong 2nd order excitation, probably from a 4 cylinder engine knowing...
I'd think about using Sound Quality software and a binaural head which would enable you to conduct listening studies. This way you'd be able to compare sounds, filter the sounds to study what are the annoying characteristics and then reduce those characteristics to set targets. The software...
I believe that the Pro/M MNF file will include the geometry and modeshapes which I require to correlate with test results.
Is this an ascii file?
How do you create it because it doesn't seem to be a standard output file?
Many thanks.
Step 1 - Support the structure, grounded or free-free.
Step 2 - Excite the structure with an instrumented hammer or exciter at the minimum number of locations which excite all modes of interest.
Step 3 - Measure response, usually with an accelerometer at enough locations to describe the...
Well you could predict the structural modes using finite element analysis or you could test the hardware using modal analysis. Actually, the best thing is to do both so that you end up with a correlated finite element model. Then you have the confidence to predict changes to the model before...
