I need to calculate the "GRMS" values in a Random Vibration analysis, but I see no reference to "GRMS" anywhere in ANSYS.
The RMS values are known as "onesigma" values in ANSYS. Since "G" refers to acceleration in terms of gravitational acceleration, then "GRMS" is the onesigma value for G acceleration. In POST1, this can most easily be retrieved by dividing the onesigma acceleration values on loadstep 5 by the gravitational acceleration constant. /post1 set,5,1,1/386.4 ! 1/386.4 converts in/s^2 to G assuming BIN units plns,u,x ! contour plot of Grms in x direction plns,u,y ! contour plot of Grms in y direction plns,u,z ! contour plot of Grms in z direction 

