Effect of working parameters on performance characteristics of hydrostatic turntable by using FSI-thermal model

Abstract

Effects of working parameters on performance characteristics of hydrostatic turntable are researched by applying the fluid-structure-thermal coupled model. Fluid-structure interaction (FSI) technique and computational fluid dynamics (CFD) method are both employed by this new model, and thermal effects are also considered. Hydrostatic turntable systems with a series of oil supply pressures, various oil recess depth and several surface roughness parameters are studied. Performance parameters, such as turntable displacement, system flow rate, temperature rise of lubrication, stiffness and damping coefficients, are derived from different working parameters (rotational speed of turntable and exerted external load) of the hydrostatic turntable. Numerical results obtained from this FSI-thermal model are presented and discussed, and theoretical predictions are in good agreement with the experimental data. Therefore, this developed model is a very useful tool for studying hydrostatic turntables. The calculation results show that in order to obtain better performance, a rational selection of the design parameters is essential.

Keywords

hydrostatic turntable / working parameters / performance characteristics / FSI-thermal coupled model

References

[1] ChengQ, RenW, LiuZ, ChenD, GuPei. Load-induced error identification of hydrostatic turntable and its influence on machining accuracy [J]. Journal of Central South University, 2016, 23(10): 2558-2569

[2] TangH, YinY, ZhangY, LiJin. Parametric analysis of thermal effect on hydrostatic slipper bearing capacity of axial piston pump [J]. Journal of Central South University, 2016, 23(2): 333-343

[3] AguirreG, Al-BenderF, BrusselH V. A multiphysics model for optimizing the design of active aerostatic thrust bearings [J]. Precision Engineering, 2010, 34(3): 507-515

[4] GaoS, ChengK, ChenS, DingH, FuH. Computational design and analysis of aerostatic journal bearings with application to ultra-high speed spindles [J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2017, 231(7): 1205-1220

[5] ZuoX, WangJ, YinZ, LiS. Comparative performance analysis of conical hydrostatic bearings compensated by variable slot and fixed slot [J]. Tribology International, 2013, 66(7): 83-92

[6] BomposD A, NikolakopoulosP G. CFD simulation of magnetorheological fluid journal bearings [J]. Simulation Modelling Practice and Theory, 2011, 19(4): 1035-1060

[7] XiongW, HouZ, LüL, YangY, YuanJu. Method for calculating stiffness and damping coefficients for hybrid bearings based on dynamic mesh model [J]. Journal of Mechanical Engineering, 2012, 48(23): 118-126

[8] AlakhramsingS, OstayenR V, ElingR. Thermo-hydrodynamic analysis of a plain journal bearing on the basis of a new mass conserving cavitation algorithm [J]. Lubricants, 2015, 3(2): 256-280

[9] XiaY, ZhangG, LuoS, ZhangJian. Temperature field distribution of non-spherical hydrostatic bearings for ultra-precision machine tools [J]. Optics and Precision Engineering, 2012, 20(8): 1759-1764

[10] LinQ, WeiZ, WangN, ChenW. Analysis on the lubrication performances of journal bearing system using computational fluid dynamics and fluid-structure interaction considering thermal influences and cavitation [J]. Tribology International, 2013, 64(3): 8-15

[11] GaoG, YinZ, JiangD, ZhangX. CFD analysis of load-carrying capacity of hydrodynamic lubrication on a water-lubricated journal bearing [J]. Industrial Lubrication and Tribology, 2015, 67(1): 30-37

[12] WangZ, ZhaJ, ChenY, ZhaoWan. Influencing of fluid-structure interactions on static and dynamic characteristics of oil hydrostatic guideways [J]. Journal of Mechanical Engineering, 2014, 50(9): 148-152

[13] DharS, VaccaA. A fluid structure interaction-EHD model of the lubricating gaps in external gear machines: Formulation and validation [J]. Tribology International, 2013, 62(6): 78-90

[14] WangY, YinZ, JiangD, GaoG, ZhangX. Study of the lubrication performance of water-lubricated journal bearings with CFD and FSI method [J]. Industrial Lubrication and Tribology, 2016, 68(3): 341-348

[15] ZhangC, JiangX, WangL, SunT, GuL. Effect of surface roughness on the start-stop behavior of air lubricated thrust micro-bearings [J]. Tribology International, 2018, 119: 436-442

[16] LiuH, XuH, EllisonP J, JinZ. Application of computational fluid dynamics and fluid-structure interaction method to the lubrication study of a rotor-bearing system [J]. Tribology Letters, 2010, 38(3): 325-336

[17] BouzidaneA, ThomasM. An electrorheological hydrostatic journal bearing for controlling rotor vibration [J]. Computers and structures, 2008, 86(3–5): 463-472

[18] YadavS K, SharmaS C. Performance of hydrostatic tilted thrust pad bearings of various recess shapes operating with non-Newtonian lubricant [J]. Finite Elements in Analysis and Design, 2014, 87: 43-55

[19] WangZ, ZhaoW, ChenY, LuB. Prediction of the effect of speed on motion errors in hydrostatic guideways [J]. International Journal of Machine Tools and Manufacture, 2013, 64(11): 78-84

[20] XiaY, YangT, ZhangG, LuoS, YuHong. Flow field distribution and bearing characteristics of hydrostatic thrust bearing in Nanosys-1000 machine [J]. Optics and Precision Engineering, 2013, 21(1): 144-150

[21] HuJ, LiuCheng. Influence of load factor on performance of hydrostatic guideway [J]. Journal of Central South University: Science and Technology, 2017, 48(7): 1741-1749

[22] ChenD, FanJ, ZhangF. Dynamic and static characteristics of a hydrostatic spindle for machine tools [J]. Journal of Manufacturing Systems, 2012, 31(1): 26-33