Multi-objective optimization and significant analysis of bearing element adjustments on the static performance of an innovative adjustable bearing through design of experiment
Restricted accessResearch articleFirst published online September, 2021
Multi-objective optimization and significant analysis of bearing element adjustments on the static performance of an innovative adjustable bearing through design of experiment
Real-time position control of the journal in a hydrodynamic bearing demands continuous modification of the film thickness. Innovative adjustable bearings offer film thickness modifications in radial and circumferential directions through the flexible bearing elements. The position of the journal depends on the bearing element adjustments and the operating parameters. These adjustments also affect the static characteristic of the bearings. Hence, the position control requires an in-depth knowledge of the effects of bearing element adjustments on the bearing characteristics. In this paper, the main effect and the interaction effects of symmetric adjustment configuration of an innovative adjustable bearing at three levels are investigated through Taguchi method and ANOVA. Grey relational analysis is used to obtain the optimum bearing element adjustment. The results show that radial adjustment has the greatest influence on the attitude angle and tilt adjustment has a significant influence on the non-dimensional side leakage. The positive tilt, negative radial adjustment at 0.4 eccentricity ratio is the optimum bearing element adjustment for achieving a better static performance of innovative adjustable bearings.
MartinJK.Innovative bearings to improve performance and efficiency in industry. Int J Perform Eng2008;
4: 345–356.
2.
MartinJK.Improved performance of hydrodynamic bearings by proactive adjustment. Mec Ind2011;
12: 17–24.
3.
PaiRParkinsDW.Performance characteristics of an innovative journal bearing with adjustable bearing elements. J Tribol2018;
140: 041705.
4.
MartinJK.Extended expansion of the Reynolds equation. Proc IMechE, Part J: J Engineering Tribology2002;
216: 49–51.
5.
MartinJKParkinsDW.Testing of a large adjustable hydrodynamic journal bearing. Tribol Trans2001;
44: 559–566.
6.
MartinJK.A mathematical model and numerical solution technique for a novel adjustable hydrodynamic bearing. Int J Numer Methods Fluids1999;
30: 845–864.
7.
MartinJKParkinsDW.Theoretical studies of a continuously adjustable hydrodynamic fluid film bearing. J Tribol2002;
124: 203–211.
8.
MartinJK.Measured stiffness and displacement coefficients of a stationary rotor hydrostatic bearing. Tribol Int2004;
37: 809–816.
9.
MartinJK.Measuring the performance of a novel fluid film bearing supporting a rotor on a stationary shaft, by non-contacting means. Proc IMechE2004;
218: 143–151.
10.
ShenoySBPaiR.Steady state performance characteristics of a single pad externally adjustable fluid film bearing*. J Adv Mech Des Syst Manuf2008;
2: 937–948.
11.
ShenoyBSPaiR.Steady state performance characteristics of single pad externally adjustable fluid film bearing in the laminar and turbulent regimes. J Tribol2009;
131: 1–7.
12.
ShenoySPaiR.Dynamic characteristics of a single pad externally adjustable fluid film bearing. Ind Lubric Tribol2011;
63: 146–151.
13.
ShenoyBSPaiR.Stability characteristics of an externally adjustable fluid film bearing in the laminar and turbulent regimes. Tribiol Int2010;
43: 1751–1759.
14.
ShenoyBSPaiR.Effect of turbulence on the static performance of a misaligned externally adjustable fluid film bearing lubricated with couple stress fluids. Tribiol Int2011;
44: 1774–1781.
15.
ShenoyBSBinuKGPaiR, et al.
Effect of nanoparticles additives on the performance of an externally adjustable fluid film bearing. Tribol Int2012;
45: 38–42.
16.
ShenoySBPaiR.Theoretical investigations on the performance of an externally adjustable fluid-film bearing including misalignment and turbulence effects. Tribol Int2009;
42: 1088–1100.
17.
ShenoyBSRammohanSPBPaiR, et al.
Effect of turbulence and offset loading on the performance of a single pad externally adjustable fluid film bearing. In: Proceedings of the ASME 2012 International Mechanical Engineering Congress&Exposition IMECE 2012, 9–15 November 2012, Houston, TX, USA. New York: ASME, 2012, pp. 1–7.
18.
ShenoyBSPaiR.Performance evaluation of a single-pad, externally-adjustable fluid film bearing. Aust J Mech Eng2009;
7: 125–136.
19.
ShenoyBSPaiR.Performance characteristics of a misaligned single pad externally adjustable fluid-film bearing. Tribol Ind2009;
31: 29–36.
20.
HariharanGPaiR.Mathematical formulation of a modified film thickness equation for multipad externally adjustable fluid film bearing. Cogent Eng2018;
5: 1–15.
21.
HariharanGPaiR.Analysis on the steady state performance of a multi pad externally adjustable fluid film bearing. Ind Lubric Tribol2019;
71: 803–809.
22.
ChasalevrisADohnalF.Improving stability and operation of turbine rotors using adjustable journal bearings. Tribol Int2016;
104: 369–382.
23.
ChasalevrisAGuignierG.Alignment and rotordynamic optimization of turbine shaft trains using adjustable bearings in real-time operation. Proc IMechE, Part C: J Mechanical Engineering Science2019;
233: 2379–2399.
24.
ZhangSXingYXuH, et al.
An experimental study on vibration suppression of adjustable elliptical journal bearing-rotor system in various vibration states. Mech Syst Signal Process2020;
141: 106477.
25.
ZhangSXuHZhangL, et al.
Vibration suppression mechanism research of adjustable elliptical journal bearing under synchronous unbalance load. Tribol Int2019;
132: 185–198.
26.
ChasalevrisADohnalF.Enhancing stability of industrial turbines using adjustable partial arc bearings. J Phys Conf Ser2016;
744: 012152.
27.
ZhangLXuHZhangS, et al.
A radial clearance adjustable bearing reduces the vibration response of the rotor system during acceleration. Tribol Int2020;
144: 106112.
28.
MorosiSSantosIF.Active lubrication applied to radial gas journal bearings. Part 1: modeling. Tribol Int2011;
44: 1949–1958.
SalazarJGSantosIF.Active tilting-pad journal bearings supporting flexible rotors: part I – the hybrid lubrication. Tribol Int2017;
107: 94–105.
31.
PierartFGSantosIF.Lateral vibration control of a flexible overcritical rotor via an active gas bearing – theoretical and experimental comparisons. J Sound Vib2016;
383: 20–34.
32.
NicolettiRSantosIF.Linear and non-linear control techniques applied to actively lubricated journal bearings. J Sound Vib2003;
260: 927–947.
33.
HaugaardAMSantosIF.Multi-orifice active tilting-pad journal bearings-harnessing of synergetic coupling effects. Tribol Int2010;
43: 1374–1391.
34.
NicolettiRSantosIF.Control system design for flexible rotors supported by actively lubricated bearings. J Vib Control2008;
14: 347–374.
35.
NicolettiRSantosIF.Vibration control of rotating machinery using active tilting-pad bearings. IEEE/ASME Int Conf Adv Intell Mechatron2001;
1: 589–594.
36.
GropperDHarveyTJWangL.Numerical analysis and optimization of surface textures for a tilting pad thrust bearing. Tribol Int2018;
124: 134–144.
37.
FesangharyMKhonsariMM.On the optimum groove shapes for load-carrying capacity enhancement in parallel flat surface bearings: Theory and experiment. Tribol Int2013;
67: 254–262.
38.
ZhangHLiuYHuaM, et al.
An optimization research on the coverage of micro-textures arranged on bearing sliders. Tribol Int2018;
128: 231–239.
39.
ScaraggiM.Optimal textures for increasing the load support in a thrust bearing pad geometry. Tribol Lett2014;
53: 127–143.
40.
GirishBMSiddeshHSSatishBM.Taguchi grey relational analysis for parametric optimization of severe plastic deformation process. SN Appl Sci2019;
1: 1–11.
41.
Soorya PrakashKGopalPMKarthikS.Multi-objective optimization using Taguchi based grey relational analysis in turning of rock dust reinforced aluminum MMC. Meas J Int Meas Confed2020;
157: 107664.
42.
SarikayaMGüllüA.Multi-response optimization of minimum quantity lubrication parameters using Taguchi-based grey relational analysis in turning of difficult-to-cut alloy Haynes 25. J Clean Prod2015;
91: 347–357.
43.
ShindeABPawarPM.Multi-objective optimization of surface textured journal bearing by Taguchi based grey relational analysis. Tribol Int2017;
114: 349–357.
44.
MurthyAARaghunandanaD.Study of dimple effect on the friction characteristics of a journal bearing using Taguchi method.IOP Conf Ser Mater Sci Eng2018;
314: 012014.
45.
PrustyJKPradhanB.Multi-response optimization using Taguchi-Grey relational analysis for composition of fly ash-ground granulated blast furnace slag based geopolymer concrete. Constr Build Mater2020;
241: 118049.
46.
ThapaSEngelkenR.Optimization of pelleting parameters for producing composite pellets using agricultural and agro-processing wastes by Taguchi-Grey relational analysis. Carbon Resour Convers2020;
3: 104–111.
47.
CanbolatASBademliogluAHArslanogluN, et al.
Performance optimization of absorption refrigeration systems using Taguchi, ANOVA and grey relational analysis methods. J Clean Prod2019;
229: 874–885.
48.
ManikandanNKumananSSathiyanarayananC.Multiple performance optimization of electrochemical drilling of Inconel 625 using Taguchi based grey relational analysis. Eng Sci Technol an Int J2017;
20: 662–671.
49.
MajumdarBCPaiRHargreavesDJ.Analysis of water-lubricated journal bearings with axial grooves. Proc IMechE, Part J: J Engineering Tribology 2004;
218: 135–146.
