Article - CS133523

How to convert the input load function of a dynamic random analysis from displacement spectral density to acceleration spectral density in creo Simulate 2.0

Modified: 10-Aug-2017   


Applies To

Creo simulate 2.0, 3.0 all datecodes

Description

  • How to convert the PSD input function of a dynamic random analysis from displacement spectral density to acceleration spectral density?
  • I have PSD input in terms of displacement i.e;(m2/(rad/s)vs HZ)
  • How to input this PSD data along a particular direction to see the effect of excitation?
  • PSD input is not a single value rather it is a range of values
  • For structural vibrations, the units may be
    –             acceleration       e.g. [(mm/s2)2/Hz] or [G2/Hz]
    –             velocity               e.g. [(mm/s)2/Hz]
    –             displacement      e.g. [(mm)2/Hz]
    -              force                   e.g. [N2/Hz]
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