6 petroleum shock absorber breaking accidents happened from 2004 to the beginning of the 2005 in Tarim oil field, in which, there were 4 times of flower bond box thread root breaking, 1 cylinder box thread root breaking and 1 mandrel breaking.

Development of Oil Seal in the Front Absorber for Jetta;

Design of performance test facility for rolling stock damper;

Taking three-D exciting endurance test of vertical damper as example,the thought and method for organizing SIM endurance test by simulating damper s working state and environment is proposed.

Damp characteristic curve design of adjustable oil damper;

Development of oil damper for quasi-high speed locomotive;

Robust design of adjustable linear oil damper;

A new method is brought forward to analyze the dynamics problem of the suspension system,aiming at solving the limitation there has been for studying the dynamic modeling of hydraulic shock absorber in the suspension system.

Under the constraint condition of finalized crankshaft design, match and design of silicone oil damper for crankshaft are performed by modeling and calculation of crankshaft torsional vibration to ensure that resonance amplitude on the free end of crankshaft and torsional vibration stress on the shaft section are below allowable values insuring safety and reliability of engine operation.