The active reduction of vibrational energy flow by means of structural intensity (SI) proposes to be an effective approach towards global downstream attenuation of a structure based on preliminary numerical studies. This work examines an approach on SI control by approximating the latter by finite differencing arrays of velocities. Here, only transversal waves are considered. Different levels of complexity are taken into consideration and compared to a state-of-the-art active vibration control. A feedforward contr…