Coupled Bending-Bending-Axial-Torsional Vibrations of Rotating Blades

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	Coupled Bending-Bending-Axial-Torsional Vibrations of Rotating Blades
	Liang Feng 1; Li Zhen 2; Yang XiaoDong 2; Zhang Wei 2; Yang TianZhi 3
刊名	ACTA MECHANICA SOLIDA SINICA
	2019
卷号	32 期号:3 页码:326-338
关键词	FINITE-ELEMENT BEAMS MODEL Rotating blades Coupled vibrations Gyroscopic coupling Complex modes Preset angle
ISSN号	0894-9166
其他题名	Coupled Bending–Bending–Axial–Torsional Vibrations of Rotating Blades
英文摘要	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.
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]
语种	英语
CSCD记录号	CSCD:6522915
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/156876]
专题	金属研究所_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.