Static and dynamic characteristics of hybrid bearings based on numerical simulation and experimental results, part II experimental results

In the second part of the serial papers experimental results are presented, The hydrodynamic pressure distribution over the hydrodynamic bearing, hybrid bearings and hydrostatic bearing are measured by a micro-pressure sense that is buried in the rotating shaft. Dynamic characteristics including stiffness and damping coefficients are measured by twice exciting technique. Two exciters are placed under and behind the tested bearing. The signals compiled from the displacement transducer and the accelerator transducer are disposed by a microcomputer to obtain the dynamic coefficients. Experimental results agree well with the numerical results.