教師資料查詢 | 類別: 期刊論文 | 教師: 王怡仁 Wang Yi-ren (瀏覽個人網頁)

標題:Effects of Tuned Mass Damper on Fixed-Fixed 3D Nonlinear String Resting on Nonlinear Elastic Foundation
學年104
學期2
出版(發表)日期2016/07/11
作品名稱Effects of Tuned Mass Damper on Fixed-Fixed 3D Nonlinear String Resting on Nonlinear Elastic Foundation
作品名稱(其他語言)
著者Wang, Yi-Ren; Wu, Li-Ping
單位
出版者
著錄名稱、卷期、頁數International Journal of Structural Stability and Dynamics 17(4), 1750047(33 pages)
摘要This paper studies the vibration of a nonlinear 3D-string fixed at both ends and supported by a nonlinear elastic foundation. Newton’s second law is adopted to derive the equations of motion for the string resting on an elastic foundation. Then, the method of multiple scales (MOMS) is employed for the analysis of the nonlinear system. It was found that 1:3 internal resonance exists in the first and fourth modes of the string when the wave speed in the transverse direction is a2≈101.5a2≈101.5 and the elasticity coefficient of the foundation is ky=9π4ky=9π4. Fixed point plots are used to obtain the frequency responses of the various modes and to identify internal resonance through observation of the amplitudes and mode shapes. To prevent internal resonance and reduce vibration, a tuned mass damper (TMD) is applied to the string. The effects of various TMD masses, locations, damper coefficients (gsgs), and spring constants (fsfs) on overall damping were analyzed. The 3D plots of the maximum amplitude (3D POMAs) and 3D maximum amplitude contour plots (3D MACPs) are generated for the various modes to illustrate the amplitudes of the string, while identifying the optimal TMD parameters for vibration reduction. The results were verified numerically. It was concluded that better damping effects can be achieved using a TMD mass ratio mD=0.3−0.5mD=0.3−0.5 located near the middle of the string. Furthermore, for damper coefficient gs=0.9gs=0.9, the use of spring constant fs=9−13fs=9−13 can improve the overall damping.
關鍵字3D nonlinear string vibration; tuned mass damper (TMD); internal response; vibration reduction
語言英文
ISSN1793-6764
期刊性質國外
收錄於SCI;
產學合作
通訊作者Wang, Yi-Ren
審稿制度
國別新加坡
公開徵稿
出版型式,電子版
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