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  • Users: TrickyDick
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  1. TrickyDick

    Modal Mass v. Modal-A

    How can I derive Modal mass parameters from the Modal-A results I have available. Thanks in advance.
  2. TrickyDick

    Vibration calculator software

    Hi, I'm looking for some useful shareware (and preferably freeware!) vibration calculator tools to download and use up a bit more disc space. No specific application in mind at present but like a good boy scout just want to be ready! Thanks. ps if you havn't tried it take a look at:-...
  3. TrickyDick

    Any ideas on vibration calculator downloads?

    Hi, I'm looking for some useful (and preferably free!) vibration calculator tools to download and use up a bit more disc space. No specific application in mind at present but like a good boy scout just want to be ready! Thanks. ps if you havn't tried it take a look at:-...
  4. TrickyDick

    PSD confidence intervals

    When a broad band random vibration signal is FFT'd and an average PSD is calculated using an exponential average with a known number of DOF's what is the PSD amplitude uncertainty interval? eg what is the +/- dB variation within 95% confidence. Any statisticians out there? Many thanks ...
  5. TrickyDick

    PSD confidence intervals

    When a broad band random vibration signal is FFT'd and an average PSD is calculated using an exponential average with a known number of DOF's what is the PSD amplitude uncertainty interval? eg what is the +/- dB variation within 95% confidence. Any statisticians out there? Many thanks ...

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