Abstract
In order to study the influence of the rotation speed on the motion accuracy of the hydrostatic journal bearing, a new dynamic accuracy model is built to predict the error motion by solving the motion equation. In the calculation, the nonlinear film force is simplified by the differential equation and calculated by the Reynolds equation. Then, the averaging coefficient is calculated in the rotation speed range 0.6–3000 rpm when the bearing has the ideal, elliptical and trilobal bushes with the recess numbers 3, 4, 5, 6. The study shows that the motion accuracy mainly decreases as the rotation speed increases. The rotation speed has effect on the error motion amplitude but has no effect on the selective action of the shaft wave number affecting the error motion. The accuracy theory can be used to predict the error motion and choose the optimized recess number.
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Acknowledgements
This work was financially supported by National Natural Science Foundation of China (Grant No. 51905056) and the Fundamental Research Funds for the Central Universities (Grant No. 2018CDXYJX0019).
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Zhang, P., Peng, Y. Influence of rotation speed on motion accuracy of hydrostatic journal bearing. Nonlinear Dyn 105, 2959–2980 (2021). https://doi.org/10.1007/s11071-021-06781-w
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DOI: https://doi.org/10.1007/s11071-021-06781-w