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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳炳煇 | |
| dc.contributor.author | Cheng-Lin Chiang | en |
| dc.contributor.author | 江政霖 | zh_TW |
| dc.date.accessioned | 2021-06-15T02:54:49Z | - |
| dc.date.available | 2009-08-04 | |
| dc.date.copyright | 2009-08-04 | |
| dc.date.issued | 2009 | |
| dc.date.submitted | 2009-08-03 | |
| dc.identifier.citation | B. J. Hamrock, Fundamentals of fluid film lubrication, 2nd ed., McGraw-Hill, Inc, New York, 1994.
D. Bonneau and J. Absi, 'Analysis of aerodynamic journal bearings with small number of herringbone grooves by finite-element method,' Journal of Tribology-Transactions of the Asme, vol. 116, pp. 698-704, Oct 1994. D. O. Fuller, Theory and practice of lubrication for engineers, 2nd ed., John Wiley & Sons, Inc, New York, 1984. F. F. Ehrich, Handbook of rotordynamics, 1nd ed., McGraw-Hill, Inc, New York, 1992. G. H. Jang and J. S. Park, 'Development of a highly efficient hard disk drive spindle motor with a passive magnetic thrust bearing and a hydrodynamic journal bearing,' Journal of Applied Physics, vol. 97, 2005. G. H. Jang and C. I. Lee, 'Development of an HDD spindle motor with increased stiffness and damping coefficients by utilizing a stationary permanent magnet,' Ieee Transactions on Magnetics, vol. 43, pp. 2570-2572, 2007. G. H. Jang and Y. J. Kim, 'Calculation of dynamic coefficients in a hydrodynamic bearing considering five degrees of freedom for a general rotor-bearing system,' Journal of Tribology-Transactions of the Asme, vol. 121, pp. 499-505, 1999. G. H. Jang, S. H. Lee, H. W. Kim, and C. S. Kim, 'Dynamic analysis of a HDD spindle system with FDBs due to the bearing width and asymmetric grooves of journal bearing,' Microsystem Technologies-Micro-and Nanosystems-Information Storage and Processing Systems, vol. 11, pp. 499-505, 2005. H. Zhou, S. Zhao, H. Xu, and J. Zhu, 'An experimental study on oil-film dynamic coefficients,' Tribology International, vol. 37, pp. 245-253, 2004. J. H. Wu, 'Vibration and noise analysis of hydrodynamic journal bearing with herringbone groove use for fan,' Master thesis, Dept. of Mechanical Engineering, NTU, Taipei, Taiwan, 2005. J. J. Chang, 'Application of the spectral element method to hydrodynamic grooved bearing,' Master thesis, Dept. of Mechanical Engineering, NTU, Taipei, Taiwan, 2003. J. Wan, T. S. Lee, C. Shu and J. Wu, 'A numerical study of cavitation foot-prints in liquid-lubricated asymmetrical herringbone grooved journal bearings,' Int. J. Numerical Methods for Heat & Fluid Flow, vol. 12, pp. 518~540. K. Kang, Y. Rhim, and K. Sung, 'A study of the oil-lubricated herringbone-grooved journal bearing .1. Numerical analysis,' Journal of Tribology-Transactions of the Asme, vol. 118, pp. 906-911, Oct 1996. M. J. Goodwin, Dynamics of rotor-bearing systems, 1nd ed., Unwin Hyman, London, 1989. M. J. Goodwin, P. J. Ogrodnik, M. P. Roach, and Y. Fang, 'Calculation and measurement of the stiffness and damping coefficients for a low impedance hydrodynamic bearing,' Journal of Tribology-Transactions of the Asme, vol. 119, pp. 57-63, 1997. M. Miwa, H. Harita, R. Kaneko, and H. Ishizaki, 'Frequency characteristics of stiffness and damping effect of ferro fluid bearing,' Wear, vol. 254, pp. 1056-1060, 2003. M. Miwa, H. Harita, T. Nishigami, R. Kaneko, and H. Unozawa, 'Frequency characteristics of stiffness and damping effect of a ferrofluid bearing,' Tribology Letters, vol. 15, pp. 97-105, 2003. M. Miwa, H. Miyazaki, R. Kaneko, and H. Unozawa, 'Evaluation of fluid dynamic bearing spindle by vibration base,' Ieee Transactions on Magnetics, vol. 41, pp. 763-768, 2005. N. Zirkelback and L. San Andres, 'Finite element analysis of herringbone groove journal bearings: A parametric study,' Journal of Tribology-Transactions of the Asme, vol. 120, pp. 234-240, 1998. S. A. McKee and T. R. McKee, 'Journal Bearing Friction in the Region of Thin Film Lubrication, ' SAE J., vol. 31, pp. 371-377, 1932. S. J. Kim, C. W. Lee, 'On-line identification of current and position stiffness by LMS algorithm in active magnetic bearing system equipped with force transducers,' Mechanical System and Signal Processing, vol. 13, pp. 681-690, 1999. T. Kobayashi, 'Numerical analysis of herringbone-grooved gas-lubricated journal bearings using a multigrid technique,' Journal of Tribology-Transactions of the Asme, vol. 121, pp. 148-156, 1999. T. Rao, J. T. Sawicki, 'Stability characteristics of herringbone grooved journal bearings incorporating cavitation effects,' Journal of Tribology-Transactions of the Asme, vol. 126, pp. 281-287, 2004. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/44390 | - |
| dc.description.abstract | The concept of herringbone-grooved hydrodynamic journal bearing has been quite mature while the real application still has large room for improvement. The fluid-film force in a herringbone-grooved bearing can be treated as a set of linear stiffness and damping coefficients. These dynamic coefficients represent the dynamic characteristics of a hydrodynamic bearing. This thesis presents an experimental apparatus and method to obtain the dynamic coefficients of a herringbone-grooved hydrodynamic bearing with different operating parameters. The effects of different operating parameters are discussed in this thesis. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T02:54:49Z (GMT). No. of bitstreams: 1 ntu-98-R96522108-1.pdf: 3670672 bytes, checksum: 7e5d4b9778a8feee5962ecde3beed11c (MD5) Previous issue date: 2009 | en |
| dc.description.tableofcontents | Chapter 1 Introduction 15
1.1. General Remarks 15 1.2. Motivation and Objectives 17 1.3. Literature Survey 18 1.4. Thesis Organization 20 Chapter 2 Theory of Lubrication and Rotating System 27 2.1. Petroff’s Equation and Sommerfeld number 27 2.2. Dynamics of a Rotor-Bearing System with Fluid Film 29 2.2.1. Motion of a Rotor with Fluid Film 29 2.2.2. Fluid Film Forces and Dynamic Coefficients 31 2.3. Method of Measurement of Dynamic Coefficients of Fluid-Film of Hydrodynamic Journal Bearing 33 2.3.1. Static-Load Method for Measuring Stiffness of Lubricant Film 33 2.3.2. Centrifugal Forces by Using Imbalance Mass for Measuring Damping Coefficients 35 2.4. Analysis of the Stability of Hydrodynamic Journal Bearing 37 2.4.1. Attitude Angle 37 2.4.2. Critical Mass and Critical Frequency 38 Chapter 3 Fabrication of the Experimental Equipments and Procedures 44 3.1. Design of Herringbone Microgrooves and Fabrication of Hydrodynamic Journal Bearing 44 3.2. Fabrication of the Experiment Fan 46 3.3. Balance of the rotor 47 3.4. Fabrication of the Experimental System 49 3.5. Experimental Procedures for the Measurement of Dynamic Characteristics 53 Chapter 4 Results and Discussion 80 4.1. Effects of Loadings on the Motion of the Rotor and on the Dynamic Coefficients 80 4.1.1. Loci of the Shaft, Orbit of the Mass of Center and Eccentricity Ratio with Respect to Loading 80 4.1.2. Loading Effect on the Stiffness and Damping Coefficients 82 4.2. Verification of Experimental Method 83 4.2.1. Nondimensional Analysis and Comparison with the Prior Studies 83 4.2.2. Verification of the Method for Measurements and Calculations 86 4.3. Effects of Rotating Speed 87 4.4. Effects of Dynamic Viscosity 89 4.5. Effects of Imbalance 90 4.6. Stability Analysis 91 Chapter 5 Conclusions and Future Prospects 113 References 116 | |
| dc.language.iso | en | |
| dc.subject | 操作參數 | zh_TW |
| dc.subject | 動態係數 | zh_TW |
| dc.subject | 液體動壓頸軸承 | zh_TW |
| dc.subject | 人字形溝槽 | zh_TW |
| dc.subject | Dynamic coefficients | en |
| dc.subject | Hydrodynamic Journal Bearing | en |
| dc.subject | Operating parameters | en |
| dc.subject | Herringbone groove | en |
| dc.title | 在不同操作參數下對於含人字形溝槽液體動壓頸軸承動態特性之量測 | zh_TW |
| dc.title | Measurement of Dynamic Characteristics of a Herringbone-grooved Hydrodynamic Journal Bearing with Different Operating Parameters | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 97-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 李達生,苗志銘 | |
| dc.subject.keyword | 人字形溝槽,液體動壓頸軸承,動態係數,操作參數, | zh_TW |
| dc.subject.keyword | Herringbone groove,Hydrodynamic Journal Bearing,Dynamic coefficients,Operating parameters, | en |
| dc.relation.page | 119 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2009-08-03 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
| 顯示於系所單位： | 機械工程學系 | |
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