A New Type of Shock Isolator and Its Experimental Verification of Quasi-Zero-Stiffness Characteristic

Abstract

Shock is a kind of phenomenon existing extensively in practical engineering projects, which is harmful to structural security. The main method to reduce the dynamic coupling between the shock excitation source and the object being isolated is implemented by setting isolators. Aimed at the problem that the conventional isolators cannot provide large-displacement and efficient isolation ability, a new type of shock isolator is presented in this paper, which can be simplified as a nondestructive expansion mechanism. The large-displacement and quasi-zero-stiffness characteristics of the isolator are verified through the static and dynamic loading experiments. Thus, with the favorable stiffness characteristics, this type of shock isolator would have broad application prospects in the relevant fields.