Experimental and Theoretical Verification of Impact Response on Air Thrust Bearing with Topological Optimized Groove

Abstract

This paper describes experimental and theoretical verification in impact response of optimized grooved bearing designed by topological optimization. Firstly, in order to measure the impact response characteristics accurately temperature compensation method for air film thickness of bearing is proposed and confirmed by experiment of bearing reaction force with air film thickness. Then, in this study, impact experiments were conducted with the optimized bearing and spiral grooved bearing and compared with theories of linear and non-linear analyses. As a result, the optimized bearing showed the high impact resistance compared with spiral grooved bearing. In addition, it was confirmed that the results of non-linear analyses are good agreement with those of experiment. Finally, based on above results, the impact response calculations of both bearings by non-liner theory under more high impact force condition were conducted. As a result, it is found that the response of spiral grooved bearing generates the self excited vibration. On the other hand, the response of optimized bearing showed damping waveform with time even under the high impact force conditions.

Numerical simulation of hydrodynamic lubrication phenomenon in thrust bearing with cavitation

“…The phase transformation characteristics and model parameter should be considered in the simulation model. Then, the changes of lubricant parameters (density, viscosity and thermal conductivity) should be considered in the simulation [3][4][5]. Then, a second critical difficulty is how to show the correlation properties between structural parameters and lubricant characteristics.…”

Study of Groove Parameters on the Hydrodynamic Behavior of Spiral-Grooved Thrust Bearing with Gas Lubricant

“…The obtained results was not only a demonstration for the proposed method but also illustrated the influence of groove shape on the load carrying capacity of thrust bearing. For the optimum design problem of thrust bearing, Masayuki et al [22,23] established a hydrodynamic analysis model of gas-lubricated thrust bear-ing considering the angular displacement characteristics, and a new groove shape was obtained, which included two curved portions. Wu et al [24] extended a new CFD model for researching the hydrodynamic response in the grooved two-disc system.…”

The Air Lubrication Behavior of a Kingsbury Thrust Bearing Demonstration

“…The measurement of dynamic variation of air films was realized. Many researches [11][12][13][14] have shown that the film thickness from 3 μm to 50 μm was a general working clearance for most gas lubricated devices. What is more, a large film thickness is required for dynamic loads to reduce the possibility of contact.…”