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Theoretical and experimental study on the vibration characteristics of rotating pre-twisted beams
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Xingxing XIONG, Zhu SU, Xiaohu MA
Journal of Vibration Engineering | 2025, 38(2) : 232 - 241
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Journal of Vibration Engineering | 2025, 38(2): 232-241
Theoretical and experimental study on the vibration characteristics of rotating pre-twisted beams
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Xingxing XIONG, Zhu SU, Xiaohu MA
Affiliations
  • State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Published: 2025-02-10 doi: 10.16385/j.cnki.issn.1004-4523.2025.02.002
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Aiming at the vibration problem of rotating pre-twisted beams in engineering, an effective modeling method is proposed to study their vibration characteristics. Rotating experiments are designed to verify the accuracy of theoretical research. By adjusting the boundary spring stiffness, different boundary conditions are simulated. The displacement field is expanded using the modified Fourier series method, and the motion equation of the rotating beam is derived using the Rayleigh-Litz method. Based on the theoretical research, vibration tests of rotating straight beams and pre-twisted beams with different sizes are designed. The accuracy of this method is verified by comparing the theoretical calculations with finite element simulations and experimental results. The possibility of elastic boundaries is also verified through error analysis. The results show that the natural frequency of the beam increases with the increase in rotating speed and thickness. The increase in pre-twist angle has a minimal effect on the first-order natural frequency but significantly reduces the second-order natural frequency.

rotating beam  /  elastic constraint  /  modified Fourier series  /  rotation experiment
Xingxing XIONG, Zhu SU, Xiaohu MA. Theoretical and experimental study on the vibration characteristics of rotating pre-twisted beams[J]. Journal of Vibration Engineering, 2025 , 38 (2) : 232 -241 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.02.002
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Year 2025 volume 38 Issue 2
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2025.02.002
  • Receive Date：2023-03-28
  • Online Date：2026-02-11
  • Published：2025-02-10
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  • Received：2023-03-28
  • Revised：2023-05-10
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    State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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