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請幫忙查SC檢索號��！ Vibro-acoustic coupling dynamics of a finite cylindrical shell under a rotor-bearing-foundation system׳s nonlinear vibration excitation Journal of Sound and Vibration doi:10.1016/j.jsv.2015.02.040 非常感謝��！ |
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Vibro-acoustic coupling dynamics of a finite cylindrical shell under a rotor-bearing-foundation system's nonlinear vibration excitation 作者:Zhou, QZ (Zhou, Qizheng)[ 1 ] ; Wang, DS (Wang, Deshi)[ 1 ] JOURNAL OF SOUND AND VIBRATION 卷: 347 頁: 150-168 DOI: 10.1016/j.jsv.2015.02.040 出版年: JUL 7 2015 查看期刊信息 摘要 The vibro-acoustic coupling dynamics of a rotor-bearing-foundation-cylinder system are investigated. Using rotor dynamics, structure dynamics and acoustical theory, the vibroacoustic coupling equation of a cylindrical shell under rotor-bearing-foundation system's nonlinear vibration excitations is derived based on variational principle. In order to solve the coupling equation, the influences of the shell's vibration to the rotor bearing system are neglected, and then the dynamical equation is reduced. The nonlinear forces transmitted to the cylinder are fitted in the Fourier series by the fast Fourier translation and the harmonic balance method, and then the analytical solution of the vibro-acoustic coupling equation of the cylinder is derived. Based on inherent assumption, the analytical expressions of the acoustic radiation power and the surface velocity are given. Then bifurcation diagrams, phase diagrams, time history diagrams and spectrum graphs are employed to study the nonlinear vibration characteristics and the acoustic radiation characteristics It is inferred that the present work proposes a semi analytical and semi numerical method for the nonlinear vibro-acoustic coupling system. The motions of the forces transmitted to the cylinder are periodic motions, quasi periodic motions, and so on. The vibro-acoustic characteristics of shell arc dominated by the rotation frequency of the rotor, while there are some harmonic components dominating the vibro-acoustic characteristics at resonant frequencies. (C) 2015 Elsevier Ltd. All rights reserved. 關(guān)鍵詞 KeyWords Plus:ACOUSTIC RADIATION; SOUND RADIATION; FLUID; POWER; TRANSMISSION; PLATES; MODEL 作者信息 通訊作者地址: Zhou, QZ (通訊作者) Naval Univ Engn, Dept Weaponry Engn, Wuhan 430033, Hubei Province, Peoples R China. 地址: [ 1 ] Naval Univ Engn, Dept Weaponry Engn, Wuhan 430033, Hubei Province, Peoples R China 電子郵件地址:zqizheng@126.com; wdeshi@sina.com 查看作者識別號作者識別號: 基金資助致謝 基金資助機(jī)構(gòu) 授權(quán)號 National Natural Science Foundation of China 11372350 查看基金資助信息 出版商 ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND 類別 / 分類 研究方向:Acoustics; Engineering; Mechanics Web of Science 類別:Acoustics; Engineering, Mechanical; Mechanics 文獻(xiàn)信息 文獻(xiàn)類型:Article 語種:English 入藏號: WOS:000353197100011 ISSN: 0022-460X eISSN: 1095-8568 期刊信息 目錄： Current Contents Connect® Impact Factor (影響因子): Journal Citation Reports® 其他信息 IDS 號: CG3RK Web of Science 核心合集中的 "引用的參考文獻(xiàn)": 39 Web of Science 核心合集中的 "被引頻次": 0 |
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