政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/102865
English  |  正體中文  |  简体中文  |  Post-Print筆數 : 27 |  Items with full text/Total items : 109951/140890 (78%)
Visitors : 46263093      Online Users : 915
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU 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
    Home ‧ Login ‧ Upload ‧ Help ‧ About ‧ Administer Goto mobile version
    政大典藏 > Journal of NCCU > Issue 66 > Journal Articles >  Item 140.119/102865


    Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/102865


    Title: 網球拍勁度對擊球時所產生動力學振動響應
    Other Titles: The Dynamic Vibrational Response of Different Stiffness of Tennis Racket Due to Eccentric Impact
    Authors: 林寶城
    Lin, Bao-Cherng
    Date: 1993-03
    Issue Date: 2016-10-17 15:59:08 (UTC+8)
    Abstract: 本研究是就網球拍質性的觀點去研究網球拍不同勁度(STIFFNESS)對擊球時產生的動力學振動響應。研究從運動員常採用的球拍中，隨機抽選DUNLOP IMPEDANCE，KENNEX DESTINY，PRINCE SPECTRUM COMP90，DUNLOP200 G，WIMBLEDON五種不同勁度球拍作為研究對象。每支球拍皆穿以台灣製的p.s尼龍線，直線張力是50磅，橫線張力是48磅。實驗時使用一部PRINCE廠牌professional Ⅱ with VSP型的發球機，以20.3±0.2公尺/秒之發球速度於距離拍面直線距離一公尺處發球撞擊拍面偏心位置。每一支球拍在垂直緊握狀況下，皆發球撞擊五十次，每次球拍受撞擊時，傳出拍柄之振動響應是透過美製GOULD牌LOAD-CELL BG-25應力測量儀以電壓形式傳送訊號資料，並配合美製GOULD多功能紀錄器，以及十六位元個人電腦安裝DASA電腦數位訊號處理軟體，將訊號作A/D轉換並紀錄實驗資料。實驗所獲得的訊號資料是使用頻譜分析的方式加以整理與分析。研究結果發現：勁度大的球拍垂直固定狀況受網球偏心撞擊時，傳出拍柄的振動響應，明顯的大於勁度小的球拍。
    This study was undertaken determine clamped at prependicular degrees Dynamic Vibrational response of different stiffness of tennis racket due to Eccentric impact. The study were the DUNLOP IMPEDANCE racket and the KENNEX DESTINY and the PRINCE SPECTRUM COMP 90 racket and the DUNLOP 200G racket and the WIMBLEDON racket etc.. Five various rackets were strung with nylon string at tensions of the longitudinal 50 pounds and transverse 48 pounds. A Prince professional II with VSP tennis ball machine was used to fire 50 new Slazenger tennis ball from a distance of 1 meter at the Eccentric location of Transverse Axis. The ball velocity was caculated to be 20.3 ±0.2 m/sec at impact. Clamped at prependicular degree vibrational response of different stiffness of five various rackets was recorded through a GOULD RECORDER using a GOULD LOAD- CELL BG-25 transducer. But the data was transformed by A/D through the personal computer using DASA software. The experimential data was used Spectrum analysis. The results of this study was found: clamped at perpendicular degree vibrational response of stiffness of tennis racket due to Eccentric impact is higher than flexible of tennis racket.
    Relation: 國立政治大學學報, 66 part 1,145-201
    Data Type: article
    Appears in Collections:[Issue 66] Journal Articles

    Files in This Item:

    File Description SizeFormat
    fb160920115457.pdf4000KbAdobe PDF2789View/Open


    All items in 政大典藏 are protected by copyright, with all rights reserved.


    社群 sharing

    著作權政策宣告 Copyright Announcement
    1.本網站之數位內容為國立政治大學所收錄之機構典藏，無償提供學術研究與公眾教育等公益性使用，惟仍請適度，合理使用本網站之內容，以尊重著作權人之權益。商業上之利用，則請先取得著作權人之授權。
    The digital content of this website is part of National Chengchi University Institutional Repository. It provides free access to academic research and public education for non-commercial use. Please utilize it in a proper and reasonable manner and respect the rights of copyright owners. For commercial use, please obtain authorization from the copyright owner in advance.

    2.本網站之製作，已盡力防止侵害著作權人之權益，如仍發現本網站之數位內容有侵害著作權人權益情事者，請權利人通知本網站維護人員(nccur@nccu.edu.tw)，維護人員將立即採取移除該數位著作等補救措施。
    NCCU Institutional Repository is made to protect the interests of copyright owners. If you believe that any material on the website infringes copyright, please contact our staff(nccur@nccu.edu.tw). We will remove the work from the repository and investigate your claim.
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback