期刊
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
卷 86, 期 2, 页码 -出版社
ASME
DOI: 10.1115/1.4042045
关键词
boundary control; nonlinear absorber; torsional NES; flexible structure
类别
资金
- China Scholarship Council (CSC)
- National Natural Science Foundation of China [11422214, 11772181]
- Shanghai Municipal Education Commission [17SG38, 2017-01-07-00-09-E00019]
- Key Research Projects of Shanghai Science and Technology Commission [18010500100]
A new kind of nonlinear energy sink (NES) is proposed to control the vibration of a flexible structure with simply supported boundaries in the present work. The new kind of absorber is assembled at the end of structures and absorbs energy through the rotation angle at the end of the structure. It is easy to design and attached to the support of flexible structures. The structure and the absorber are coupled just with a nonlinear restoring moment and the damper in the absorber acts on the structure indirectly. In this way, all the linear characters of the flexible structure will not be changed. The system is investigated by a special perturbation method and verified by simulation. Parameters of the absorber are fully discussed to optimize the efficiency of it. For the resonance, the maximum motion is restrained up to 90% by the optimized absorber. For the impulse, the vibration of the structure could attenuate rapidly. In addition to the high efficiency, energy transmits to the absorber uniaxially. For the high efficiency, convenience of installation and the immutability of linear characters, the new kind of rotating absorber provides a very good strategy for the vibration control.
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