| Coupled Bending-Bending-Axial-Torsional Vibrations of Rotating Blades | |
| 其他题名 | Coupled Bending–Bending–Axial–Torsional Vibrations of Rotating Blades |
| Liang Feng1; Li Zhen2; Yang XiaoDong2; Zhang Wei2; Yang TianZhi3 | |
| 2019 | |
| 发表期刊 | ACTA MECHANICA SOLIDA SINICA
 |
| ISSN | 0894-9166 |
| 卷号 | 32期号:3页码:326-338 |
| 摘要 | In this paper, the coupled bending-bending-axial-torsional free vibrations of rotating blades are investigated based on the Euler-Bernoulli beam model. The coupled partial differential equations governing flapwise, edgewise, axial and torsional motions are derived by the Hamilton's principle, wherein three types of velocity-dependent terms, namely static centrifugal terms, dynamic centrifugal terms and gyroscopic coupling terms, are focused. The ordinary differential equations are acquired by the Galerkin truncation, and the natural frequencies in all directions and complex mode shapes of the rotating blades are analyzed in detail. It is revealed that the three types of velocity-dependent terms have different effects on the natural frequencies. The natural frequencies are noticeably dependent on the rotating speed and preset angle, except for the axial vibration, which is almost immune to the preset angle. The complex modal motions are displayed by a series of positions of the central line and free-end cross section for different time instants, showing the coupled vibrations among different directions. |
| 其他摘要 | In this paper,the coupled bending–bending–axial–torsional free vibrations of rotating blades are investigated based on the Euler–Bernoulli beam model.The coupled partial differential equations governing flapwise,edgewise,axial and torsional motions are derived by the Hamilton's principle,wherein three types of velocity-dependent terms,namely static centrifugal terms,dynamic centrifugal terms and gyroscopic coupling terms,are focused.The ordinary differential equations are acquired by the Galerkin truncation,and the natural frequencies in all directions and complex mode shapes of the rotating blades are analyzed in detail.It is revealed that the three types of velocity-dependent terms have different effects on the natural frequencies.The natural frequencies are noticeably dependent on the rotating speed and preset angle,except for the axial vibration,which is almost immune to the preset angle.The complex modal motions are displayed by a series of positions of the central line and free-end cross section for different time instants,showing the coupled vibrations among different directions. |
| 关键词 | FINITE-ELEMENT BEAMS MODEL Rotating blades Coupled vibrations Gyroscopic coupling Complex modes Preset angle |
| 收录类别 | CSCD |
| 语种 | 英语 |
| 资助项目 | [National Natural Science Foundation of China] ; [Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University] ; [Beijing Natural Science Foundation] |
| CSCD记录号 | CSCD:6522915 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/156877 |
| 专题 | 中国科学院金属研究所 |
| 作者单位 | 1.扬州大学 2.Beijing University Technol, Coll Mech Engn & Appl Elect, Beijing Key Lab Nonlinear Vibrat & Strength Mech, Beijing 100124, Peoples R China 3.中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Liang Feng,Li Zhen,Yang XiaoDong,et al. Coupled Bending-Bending-Axial-Torsional Vibrations of Rotating Blades[J]. ACTA MECHANICA SOLIDA SINICA,2019,32(3):326-338. |
| APA | Liang Feng,Li Zhen,Yang XiaoDong,Zhang Wei,&Yang TianZhi.(2019).Coupled Bending-Bending-Axial-Torsional Vibrations of Rotating Blades.ACTA MECHANICA SOLIDA SINICA,32(3),326-338. |
| MLA | Liang Feng,et al."Coupled Bending-Bending-Axial-Torsional Vibrations of Rotating Blades".ACTA MECHANICA SOLIDA SINICA 32.3(2019):326-338. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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