An impact damper applied to vertical vibrating sy stems is studied; The first dominant mode of cantilever is discriminated based on the method of SDOF;Vibrating intensity is compared between with an impact damper is fitted on a cantilever and without.

A impact between freely moving object and primary oscillator follows the one-step memory Markov process after maklng an investigation into the single degree of freedom system to using impact damper under the action of random excitation is indicated.

The experimental methods of improving boring workpiece by shock vibration absorber were studied.

The Hopf bifurcations of a two degree freedom vibro impact system in non .

Research of control and DAQ in experiment of impact vibration;

The burglar alarm with intelligent impact vibration that is controlled by single chip microcom-puter was introduced- Comparing the alarm with other, this burglar alarm was of distinguishing features , such as high intelligent, enhanced guarding function and alarming exactly.

Using the impact vibration testing architectural engineering structure intensity with a measuring vibration method of laser self-mixing interference,through simulating impact vibration signal,the vibration frequency and the oscillation amplitude relations are presented.