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In this researeh, an experimental test device of the spiral groove bearing (SGB) spindle is developed. The dynamic characteristics of the SGB spindle are investigated. The effects of rotating speed, load and bearing clearance on the dynamic characteristics are considered. lt is found that both radial and axial non-repeatable run out (NRRO) decrease with the increase of rotating speed of the spindle...
The equation error based system identification method is found to be efficient for identifying the element properties directly without iterations. But its application is limited to truss type structures only. The equation of error approach of identification algorithm is extended here for a frame element to asses the existing damage of the bridge girder-pier system from simulated modal data. The problem...
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