An overview of research progress on quasi-zero stiffness vibration isolation systems

Based on the basic principle of quasi-zero stiffness isolation system, the dynamics characteristics of quasi-zero stiffness nonlinear system under simple harmonic force excitation and displacement excitation were systematically analyzed. The structural design concept and research framework of quasi-zero stiffness isolation system were further discussed. The research status of quasi-zero stiffness vibration isolation system and the theoretical progress of active control of quasi-zero stiffness vibration isolator were summarized. Finally, some existing problems in quasi-zero stiffness vibration isolation that need to be solved urgently and further studied were elaborated, and the remaining problems of quasi-zero stiffness isolation system in the fields of three-dimensional vibration isolation and complex random vibration were put forward, so as to provide reference for the design of a new type of quasi-zero stiffness isolation system. © 2023 Southeast University. All rights reserved.