Vibration reduction and stability analysis of damping rings on nonlinear free-free beam

淡江大學機構典藏 > 工學院 > 航空太空工程學系暨研究所 > 期刊論文 > Item 987654321/119799

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题名:	Vibration reduction and stability analysis of damping rings on nonlinear free-free beam
作者:	Yi-Ren Wang;Yun-Shuo Chang;Nguyen Cong Ha
关键词:	Damping ring;nonlinear vibrations;internal resonance;method of multiple scales
日期:	2020-12-29
上传时间:	2020-12-31 12:10:18 (UTC+8)
出版者:	Sage
摘要:	Two damping rings (DRs) are added on a nonlinear free-free elastic beam to reduce vibrations. This elastic beam with free-free boundary conditions can be used to simulate the high speed aircraft fuselage vibrations. Both isotropic beam and compound beam with double-section are investigated. The beam is subjected to a distributed load with the harmonic wind force. The method of multiple scales ((MOMS) a perturbation technique) is employed to analyze this nonlinear problem in frequency domain. DRs with various locations, masses, spring constants, and damping coefficients are analyzed and the maximum amplitude counter plots (MACPs) are compiled to identify DRs’ combinations for the optimal damping effects. The Floquet theory is used to make the basin of attraction (BOA) charts and analyze the stability of the system. This research can be applied in a wide range of engineering problems, such as rocket structures, high-speed aircrafts, satellites, missiles, etc.
關聯:	Advances in Mechanical Engineering 12(12)
DOI:	10.1177/1687814020985211
显示于类别:	[航空太空工程學系暨研究所] 期刊論文

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