Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.

Innovation Space

FREE STUDENT SOFTWARE

How to extract RMS in random vibration+ Acceleration output

- June 15, 2020 at 6:03 pm
  
  nellysh2017
  Subscriber
  
  Hello,
  
  I'm performing random vibration analysis on a simple structure, my base excitation is G acceleration, for the output result, I request acceleration. The unit is (mm/s^2)^2/Hz, do I need to divide it by 9.81 to get (G^2/Hz)?
  
  Also, how can I extract Grms for both output and input excitation?
- June 16, 2020 at 12:03 am
  
  peteroznewman
  Subscriber
  
  Please show the Tabular data for the PSD input for the base acceleration.
- June 16, 2020 at 1:10 am
  
  nellysh2017
  Subscriber
  
  Thank you for your response.
  
  Here is the PSD response:
- June 16, 2020 at 4:14 am
  
  peteroznewman
  Subscriber
  
  6.5 GRMS
  
  Do you have matlab? If so, download vibrationdata.
  
  There is also a version for Python, which is free.
- June 16, 2020 at 5:44 pm
  
  nellysh2017
  Subscriber
  
  Thank you very much Peter. One more question, I divide acceleration PSD output by g^2 to get G acceleration PSD. Is that correct?
- June 17, 2020 at 12:19 am
  
  peteroznewman
  Subscriber
  
  Please study the material on this webpage.
- June 17, 2020 at 1:27 am
  
  nellysh2017
  Subscriber
  
  Thank you!

Viewing 6 reply threads

The topic ‘How to extract RMS in random vibration+ Acceleration output’ is closed to new replies.

[bingo_chatbox]