Abstract: This paper describes a type of new vibration isolator with solid-and-liquid mixture (SALiM) for vibration isolation and shock absorbing. The SALiM is composed of incompressible liquid and compressible elastic solid elements. Under shock or vibration loading, the incompressible liquid can instantly pass the pressure onto all solid elements. The deformations of all solid elements can greatly absorb and dissipate the energy of vibrations and shocks. In this paper, hollow rubber sphere was used as solid element in the isolator. Dynamic properties of hollow rubber sphere were investigated and the nonlinear force-displacement relation of isolator was established. In addition, the motion equation of the isolator and its perturbation solution are developed. The theoertical results show good agreement with the MTS experimental data. Furthermore, the frequency response of the isolator is evaluated theoretically and measured on a test rig to show nonlinear dynamic behaviors.

Key words: Liquid-Solid Mixture, Vibration Isolation, Nonlinear Stiffness, Shock Absorbing, Vibration Control