An experimental device of the vibration performance of foam plastic was set up. The
vibration test of a reinforced plastic material was carried out. Experimental results show that the
vibration performance of this foam plastic material has relation not only to vibration amplitude but to
exciting frequency. The restoring force of the foam plastic material is influenced by exciting
frequency, vibration amplitude and deformation history. The foam plastic material has a nonlinear
hysteretic characteristic. In vibration conditions, stiffness and damping characteristics of the foam
plastic material are nonlinear. The research lays a foundation for modeling and parameters
identification, dynamic design and dynamic optimization of the vibration-isolation material.