Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor System
With the ever-increasing requirement for the thrust to weight ratio, the rotational speed of modern aeroengine is increasingly improved; thus most of the aeroengine rotor is flexible. Some dynamic problems, such as excessive vibration, appear due to the increase of the rotation speed of the aeroengi...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2017/9628181 |
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| _version_ | 1841524888613945344 |
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| author | Zheng Longxi Jia Shengxi Huang Jingjing |
| author_facet | Zheng Longxi Jia Shengxi Huang Jingjing |
| author_sort | Zheng Longxi |
| collection | DOAJ |
| description | With the ever-increasing requirement for the thrust to weight ratio, the rotational speed of modern aeroengine is increasingly improved; thus most of the aeroengine rotor is flexible. Some dynamic problems, such as excessive vibration, appear due to the increase of the rotation speed of the aeroengine. The aim of this study is to reduce the vibration level of the flexible rotor system through optimum design. A laboratory scale two-disk flexible rotor system representing a typical aeroengine rotor system is designed. A combinational optimization strategy coupling the rotordynamics calculation software ANSYS and the multidisciplinary optimization software ISIGHT is proposed to optimize the rotor system. The positions of the disks are selected as the design variables. Constraints are imposed on critical speeds. The disks’ amplitudes and bearings’ transmitted forces are chosen as the optimization objectives. Using this strategy, the optimal positions of the two disks are obtained. The numerical optimization results are verified by the experiments based on the test rig. The results show a significant vibration level reduction after optimization. |
| format | Article |
| id | doaj-art-b5f9212b62a6404498760947d8e89325 |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-b5f9212b62a6404498760947d8e893252025-02-03T05:47:11ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342017-01-01201710.1155/2017/96281819628181Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor SystemZheng Longxi0Jia Shengxi1Huang Jingjing2School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, ChinaWith the ever-increasing requirement for the thrust to weight ratio, the rotational speed of modern aeroengine is increasingly improved; thus most of the aeroengine rotor is flexible. Some dynamic problems, such as excessive vibration, appear due to the increase of the rotation speed of the aeroengine. The aim of this study is to reduce the vibration level of the flexible rotor system through optimum design. A laboratory scale two-disk flexible rotor system representing a typical aeroengine rotor system is designed. A combinational optimization strategy coupling the rotordynamics calculation software ANSYS and the multidisciplinary optimization software ISIGHT is proposed to optimize the rotor system. The positions of the disks are selected as the design variables. Constraints are imposed on critical speeds. The disks’ amplitudes and bearings’ transmitted forces are chosen as the optimization objectives. Using this strategy, the optimal positions of the two disks are obtained. The numerical optimization results are verified by the experiments based on the test rig. The results show a significant vibration level reduction after optimization.http://dx.doi.org/10.1155/2017/9628181 |
| spellingShingle | Zheng Longxi Jia Shengxi Huang Jingjing Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor System International Journal of Rotating Machinery |
| title | Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor System |
| title_full | Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor System |
| title_fullStr | Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor System |
| title_full_unstemmed | Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor System |
| title_short | Numerical and Experimental Study on the Multiobjective Optimization of a Two-Disk Flexible Rotor System |
| title_sort | numerical and experimental study on the multiobjective optimization of a two disk flexible rotor system |
| url | http://dx.doi.org/10.1155/2017/9628181 |
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