EQUIVALENT STIFFNESS IDENTIFICATION FOR JOINT OF ROTOR BEARING SYSTEM
Aimed at the difficulty in identifying the equivalent stiffness of rotor bearing joint, an equivalent stiffness identification method of combining finite element modal analysis, experimental modal analysis and back propagation neural network was proposed. Firstly, the finite element model analysis o...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2019-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.03.003 |
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| _version_ | 1841535624177254400 |
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| author | WANG Cai HUA ChunRong FAN Kang ZHAO Gang |
| author_facet | WANG Cai HUA ChunRong FAN Kang ZHAO Gang |
| author_sort | WANG Cai |
| collection | DOAJ |
| description | Aimed at the difficulty in identifying the equivalent stiffness of rotor bearing joint, an equivalent stiffness identification method of combining finite element modal analysis, experimental modal analysis and back propagation neural network was proposed. Firstly, the finite element model analysis of a rotor bearing system was built with the Abaqus, and the respective natural frequencies were obtained. Secondly, the first four bending natural frequencies of the rotor bearing system were acquired with experimental modal analysis. Finally, the equivalent stiffness and natural frequencies were trained and identified by BP neural network. Research results showed that the maximum relative error of the radial and axial equivalent stiffness identification of the rotor bearing system were 1.75% and 5.43% respectively. The research work provides a reference for parametric identification on mechanical structure joint. |
| format | Article |
| id | doaj-art-6165c76aab4e476886114fd52bdef5c7 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2019-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-6165c76aab4e476886114fd52bdef5c72025-01-15T02:29:50ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692019-01-014152152630604708EQUIVALENT STIFFNESS IDENTIFICATION FOR JOINT OF ROTOR BEARING SYSTEMWANG CaiHUA ChunRongFAN KangZHAO GangAimed at the difficulty in identifying the equivalent stiffness of rotor bearing joint, an equivalent stiffness identification method of combining finite element modal analysis, experimental modal analysis and back propagation neural network was proposed. Firstly, the finite element model analysis of a rotor bearing system was built with the Abaqus, and the respective natural frequencies were obtained. Secondly, the first four bending natural frequencies of the rotor bearing system were acquired with experimental modal analysis. Finally, the equivalent stiffness and natural frequencies were trained and identified by BP neural network. Research results showed that the maximum relative error of the radial and axial equivalent stiffness identification of the rotor bearing system were 1.75% and 5.43% respectively. The research work provides a reference for parametric identification on mechanical structure joint.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.03.003Rotor bearingJointModalBP neural networkEquivalent stiffness |
| spellingShingle | WANG Cai HUA ChunRong FAN Kang ZHAO Gang EQUIVALENT STIFFNESS IDENTIFICATION FOR JOINT OF ROTOR BEARING SYSTEM Jixie qiangdu Rotor bearing Joint Modal BP neural network Equivalent stiffness |
| title | EQUIVALENT STIFFNESS IDENTIFICATION FOR JOINT OF ROTOR BEARING SYSTEM |
| title_full | EQUIVALENT STIFFNESS IDENTIFICATION FOR JOINT OF ROTOR BEARING SYSTEM |
| title_fullStr | EQUIVALENT STIFFNESS IDENTIFICATION FOR JOINT OF ROTOR BEARING SYSTEM |
| title_full_unstemmed | EQUIVALENT STIFFNESS IDENTIFICATION FOR JOINT OF ROTOR BEARING SYSTEM |
| title_short | EQUIVALENT STIFFNESS IDENTIFICATION FOR JOINT OF ROTOR BEARING SYSTEM |
| title_sort | equivalent stiffness identification for joint of rotor bearing system |
| topic | Rotor bearing Joint Modal BP neural network Equivalent stiffness |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.03.003 |
| work_keys_str_mv | AT wangcai equivalentstiffnessidentificationforjointofrotorbearingsystem AT huachunrong equivalentstiffnessidentificationforjointofrotorbearingsystem AT fankang equivalentstiffnessidentificationforjointofrotorbearingsystem AT zhaogang equivalentstiffnessidentificationforjointofrotorbearingsystem |