Random vibration analysis

- April 27, 2019 at 4:01 pm
  
  waltbeach
  Subscriber
  
  Hello everyone,
  
  I'm performing a random vibration analysis for the first time, and defining boundary conditions, it exists PSD Acceleration and PSD G Acceleration.
  
  Could someone explain differences between "PSD Acceleration" and "PSD G Acceleration".
  
  Thanks in advance.
- April 27, 2019 at 4:52 pm
  
  jj77
  Subscriber
  
  Psd acc. Is in say m/s2 units and the other is in g units 9.81 m/s2. Thus if you have 2 g units in g psd units, that is equivalent to 2*9.81 m/s2 in psd acc. So to go from acc. UNITS to g acc. units one divides by 9.81. The other way around to go from g units to m/s2.