Abstract: By using a composite structure of Titanium Nickel shape memory alloy(SMA) and rubber polymer, a repetitive-use shock resistance device for submarine platform was designed. The shock resistance characteristics of this device subjected to different pulse durations and amplitudes were simulated numerically with the ansys/ls-dyna finite software. The results show that the shock acceleration attenuation of this device is up to 95% or more, and it can protect the equipment of about 100kg effectively against the shock loading. Compare with the traditional linear spring, it has lower acceleration response and vibration amplitude. Most important, for the hysteretic characteristic from superelastic deformation of SMA, it can attenuate the vibration amplitude rapidly.