Design and Simulation of a Piezoelectric Actuator for Deep-Sea Release Device

For the traditional underwater acoustic release device with complex structure, large volume and mass, difficult dynamic sealing in deep-sea high-pressure environment, a novel piezoelectric actuator for function is proposed. The consists of composite stator rotor, based on basic principles inverse effect friction transmission, which achieves separation between rotor through rotational bending motion coupled by two-phase vibration. proposed adopts simple compact easy to control, reduces weight entire system, increases its reliability environments allowing friction-driven interface be directly contact seawater, eliminating need seals. First, three-dimensional solid model was established structural dynamics analysis, driving principle theoretically analyzed. equation elliptical trajectory stator’s mass point derived. Then, finite element modal simulation analysis were performed stator, parameters optimized design requirements frequency consistency distance from adjacent interference modes. Finally, amplitude-frequency characteristics, working mode shape, analyzed harmonic response simulation. This paper proposes actuator, offers fresh idea advancing devices technology.