

March 17, 2023 at 9:00 amFAQParticipant
In an ANSYS random vibration analysis, rootmeansquare (RMS) values are referred to as “onesigma” values. So, the RMS acceleration is the onesigma acceleration. “G” refers to the acceleration expressed in terms of the gravitational acceleration. So “GRMS” is the onesigma acceleration in terms of G. In /POST1, the calculated onesigma accelerations are stored in load step 5. To obtain the onesigma acceleration in terms of G (GRMS), simply divide the onesigma acceleration values by the gravitational acceleration constant using the SET command. /post1 set,5,1,1/386.4 ! for BIN unit system

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