Dynamic Coefficients Identification of Water-Lubricated Hybrid Bearings Used in High-Speed Spindles with Different Excitation Methods
Rotor stability and rotation accuracy, which are highly dependent on the dynamic coefficients of supporting hybrid bearings, are two important issues of high-speed water-lubricated spindles. To improve the spindles’ performance, the dynamic coefficients of high-speed water-lubricated hybrid bearings...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2017/2597910 |
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| _version_ | 1832552575005622272 |
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| author | Lin Wang Xianzhi Xiong Hua Xu |
| author_facet | Lin Wang Xianzhi Xiong Hua Xu |
| author_sort | Lin Wang |
| collection | DOAJ |
| description | Rotor stability and rotation accuracy, which are highly dependent on the dynamic coefficients of supporting hybrid bearings, are two important issues of high-speed water-lubricated spindles. To improve the spindles’ performance, the dynamic coefficients of high-speed water-lubricated hybrid bearings were experimentally identified by the noncontact harmonic excitation method and the additional unbalance excitation method, respectively. Comparisons between experimental results and theoretical predictions were made. The experimental technique and the identification model were validated to be effective. Besides, the influence of supply pressure and rotating speed on dynamic coefficients was also presented. As for different operating conditions, valuable guides were provided to investigate the dynamic performance of high-speed and ultra-high-speed spindles. |
| format | Article |
| id | doaj-art-8027412f7c954863a99fc42594d9a469 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-8027412f7c954863a99fc42594d9a4692025-02-03T05:58:16ZengWileyShock and Vibration1070-96221875-92032017-01-01201710.1155/2017/25979102597910Dynamic Coefficients Identification of Water-Lubricated Hybrid Bearings Used in High-Speed Spindles with Different Excitation MethodsLin Wang0Xianzhi Xiong1Hua Xu2School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaXi’an High Voltage Apparatus Research Institute Co., Ltd., Xi’an 710077, ChinaKey Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi’an Jiaotong University, Xi’an 710049, ChinaRotor stability and rotation accuracy, which are highly dependent on the dynamic coefficients of supporting hybrid bearings, are two important issues of high-speed water-lubricated spindles. To improve the spindles’ performance, the dynamic coefficients of high-speed water-lubricated hybrid bearings were experimentally identified by the noncontact harmonic excitation method and the additional unbalance excitation method, respectively. Comparisons between experimental results and theoretical predictions were made. The experimental technique and the identification model were validated to be effective. Besides, the influence of supply pressure and rotating speed on dynamic coefficients was also presented. As for different operating conditions, valuable guides were provided to investigate the dynamic performance of high-speed and ultra-high-speed spindles.http://dx.doi.org/10.1155/2017/2597910 |
| spellingShingle | Lin Wang Xianzhi Xiong Hua Xu Dynamic Coefficients Identification of Water-Lubricated Hybrid Bearings Used in High-Speed Spindles with Different Excitation Methods Shock and Vibration |
| title | Dynamic Coefficients Identification of Water-Lubricated Hybrid Bearings Used in High-Speed Spindles with Different Excitation Methods |
| title_full | Dynamic Coefficients Identification of Water-Lubricated Hybrid Bearings Used in High-Speed Spindles with Different Excitation Methods |
| title_fullStr | Dynamic Coefficients Identification of Water-Lubricated Hybrid Bearings Used in High-Speed Spindles with Different Excitation Methods |
| title_full_unstemmed | Dynamic Coefficients Identification of Water-Lubricated Hybrid Bearings Used in High-Speed Spindles with Different Excitation Methods |
| title_short | Dynamic Coefficients Identification of Water-Lubricated Hybrid Bearings Used in High-Speed Spindles with Different Excitation Methods |
| title_sort | dynamic coefficients identification of water lubricated hybrid bearings used in high speed spindles with different excitation methods |
| url | http://dx.doi.org/10.1155/2017/2597910 |
| work_keys_str_mv | AT linwang dynamiccoefficientsidentificationofwaterlubricatedhybridbearingsusedinhighspeedspindleswithdifferentexcitationmethods AT xianzhixiong dynamiccoefficientsidentificationofwaterlubricatedhybridbearingsusedinhighspeedspindleswithdifferentexcitationmethods AT huaxu dynamiccoefficientsidentificationofwaterlubricatedhybridbearingsusedinhighspeedspindleswithdifferentexcitationmethods |