Products are inevitably affected by impact, bump, free fall, tumbling, etc. during production, transportation, loading and unloading as well as during the use of the products. All of these are transient excitation on the object, causing the object to produce mechanical characteristics of high speed, acceleration, strain rate, etc instantly. These kind of characteristics are completely different from that in static load, and may cause problems to the object in terms of structural strength and stability and sometimes the object may fail. Therefore, it is necessary to study the effect of impact and reproduce the shock environment, to assess the structural strength and performance of the object under shock environment.