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.
General Mechanical

General Mechanical

Topics related to Mechanical Enterprise, Motion, Additive Print and more.
  1. All Channels
  2. General Mechanical
  3. Reg PSD output graph in ‘random vibration’ analysis

Reg PSD output graph in ‘random vibration’ analysis

    • April 26, 2022 at 4:36 pm
      Anujpk
      Subscriber

      I have done one 'random vibration' analysis & getting first mode at approx 1400Hz..The test frequency is 2000Hz... Until now, I haven't been able to cross the min 2000Hz requirement but my acceleration graph goes down after 350 Hz so my colleague told me to check the response obtained from PSD G acceleration.

      I am getting response of 400 (G^2/Hz) at 1400 Hz...so how to confirm whether this response is acceptable or not?

    • April 27, 2022 at 12:27 pm
      Chandra Sekaran
      Ansys Employee
      You mention your test frequency is 2000 Hz. The test must be applying some load at 2000 Hz right? What is that load and its units? Why are you running a random vibration analysis instead of a harmonic analysis if your test is done at only one frequency i.e. 2000 Hz? It is not clear what you mean by "I haven't been able to cross the min 2000Hz requirement but my acceleration graph goes down after 350 Hz".
Viewing 1 reply thread
  • The topic ‘Reg PSD output graph in ‘random vibration’ analysis’ is closed to new replies.
Innovation Space
Top Contributors

© 2026 Copyright ANSYS, Inc. All rights reserved.

Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.
[bingo_chatbox]