Tuned mass dampers don’t but active mass dampers do. Both are in use. Also damping is achieved by dissipating energy through the counter mouvement of the tuned

Tuned mass dampers don’t but active mass dampers do. Both are in use. Also damping is achieved by dissipating energy through the counter mouvement of the tuned mass which is literally compensating for the movement put in place by the external force. It doesn’t totally offset it but still.