Spectral analysis for accurate measurement of dynamic stiffness and damping of water lubricated rubber bearing was used,which can filter out the interfering signals caused by bearing itself and external environment.The water lubricated rubber bearing was shocked twice by two shock excitation in different frequencies in the experiment.Different with previous excitation,the inputs were displacement,and based on that, the outputs vibration force can be measured.Thus,the dynamic characteristics can be calculated through spectral analysis.Finally,the influences of load and velocity on the dynamic characteristics of the water lubricated rubber bearing were studied,the results showed that this method can effectively avoid the issues of uncontrollability exciting force due to the unbalanced radial force resulted from whirling motion, which can supply a theoretical guidance for further experiment.
