Vibration suppression mechanism of ultrasonic field energy

Abstract For complex systems, the inhibition of self-excited vibration has always been a difficulty in engineering field. Currently, ultrasonic field energy as a special field energy could suppress vibration significantly. Unfortunately, vibration suppression mechanism has not been elucidated and intrinsic association with vibration field is still ambiguous. Here, we clarify coupling mechanism of ultrasonic field energy and unsteady vibration field energy firstly from the perspective of energy transfer and distribution. We find that it realizes spatially controllable redistribution of vibration field by changing distribution law of excitation waves, which makes vibration frequency migrate across scales. On this basis, we establish a relationship model between ultrasonic field energy and vibration field energy innovatively to accomplish precise vibration suppression. These insights generate important significance for active vibration suppression, which have broad applicability in flexible precision manufacturing, vibration inhibition of aircraft or satellite solar array, high-precision medical equipment and rail traffic stability control.