PSD

The vibration actuator PSD is defined using a spline function. You can specify either a force PSD or a displacement PSD. For the displacement PSD, you can also specify a corresponding stiffness. It is assumed that the PSD inputs applied to the linear model are not correlated to one another.

Note that you cannot combine vibration actuators of the non-PSD type with PSD-type vibration actuators in the same vibration Analysis.