In ‘random vibration’ analysis,how to define PSD curve?

- May 4, 2022 at 5:55 am
  
  woaiwan2010
  Subscriber
  
  Do the PSD curves need to be manually interpolated?
  What is the result of automatic interpolation?
  How automatic interpolation is achieved？
  How many points to interpolate between each eigenfrequency?
  using Ansys Student Ansys Workbench
- May 4, 2022 at 4:06 pm
  
  peteroznewman
  Subscriber
  
  A common form of a PSD profile is three straight lines. A positive slope at low frequencies, a flat top and a negative slope at high frequencies.
  Four points define those three lines. You don't need to manually interpolate, the solver will do that for you automatically when you specify the frequencies you want to include in the results.

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