Software packages for vibrational transfer function evaluation?
Software packages for vibrational transfer function evaluation?
(OP)
I'm trying to vibrationally optimize a thermal braid for use in a temperature-regulated tomography stage. I've used Solidworks to find the minimal thermal specs for this braid but I don't see a way to model this braid vibrationally via FEA.
My current plan is to use a cone speaker to sweep a sine tone (~25Hz-500Hz) through the braid and use two accelerometers to capture its transfer function as a function of frequency--I've already tried broadband noise but SNR looks too low to be reliable. Can anybody recommend a software package that has a tone generator as well as two-channel analysis (to grab a spectrum at the vibration source and another at the downstream side of the braid)? I've looked into some low-cost FFT analyzers, but most look pretty unreliable and one of the two I tried had a downright math error in calculating the FFT.
I'm not very familiar with vibrometry but this operation seems like something that people do all the time, and I don't want to reinvent the wheel. Thanks.
My current plan is to use a cone speaker to sweep a sine tone (~25Hz-500Hz) through the braid and use two accelerometers to capture its transfer function as a function of frequency--I've already tried broadband noise but SNR looks too low to be reliable. Can anybody recommend a software package that has a tone generator as well as two-channel analysis (to grab a spectrum at the vibration source and another at the downstream side of the braid)? I've looked into some low-cost FFT analyzers, but most look pretty unreliable and one of the two I tried had a downright math error in calculating the FFT.
I'm not very familiar with vibrometry but this operation seems like something that people do all the time, and I don't want to reinvent the wheel. Thanks.





RE: Software packages for vibrational transfer function evaluation?
RE: Software packages for vibrational transfer function evaluation?
The specific issue you have created for yourself is that you want the input and output signals generated from the same device. I do not know enough about PC soundcards to know whether this is tricky.
It would of course be helpful to know which packages you have tried already.
Cheers
Greg Locock
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