English  |  正體中文  |  简体中文  |  Items with full text/Total items : 51897/87065 (60%)
Visitors : 8470584      Online Users : 73
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/108159


    Title: Effects of Tuned Mass Damper on Fixed-Fixed 3D Nonlinear String Resting on Nonlinear Elastic Foundation
    Authors: Wang, Yi-Ren;Wu, Li-Ping
    Keywords: 3D nonlinear string vibration;tuned mass damper (TMD);internal response;vibration reduction
    Date: 2016/07/11
    Issue Date: 2016-11-02 02:10:25 (UTC+8)
    Publisher: World Scientific Publishing Co Pte Ltd.
    Abstract: 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.
    Relation: International Journal of Structural Stability and Dynamics 17(4), 1750047(33 pages)
    DOI: 10.1142/S021945541750047X
    Appears in Collections:[航空太空工程學系暨研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    Effects of Tuned Mass Damper on Fixed-Fixed 3D Nonlinear String Resting on Nonlinear Elastic Foundation.pdf2023KbAdobe PDF1View/Open
    index.html0KbHTML87View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback