不同撞擊點、撞擊速度與穿線磅數對羽球拍功能性表現之影響

The Effect of Different Impact Points, Impact Velocities and Thread Pounds on Badminton Racket Functional Performance

10.6833/CJCU.2013.00246

蘇宣輔

撞擊點 ； 撞擊速度 ； 穿線磅數 ； 羽球拍 ； 功能性表現 ； impact point ； impact velocity ； thread pound ； badminton racket ； functional performance

長榮大學運動休閒管理學系（所）學位論文

2013年

碩士

劉于詮

繁體中文

本研究針對不同撞擊點、撞擊速度與穿線磅數對羽球拍功能性表現參數的影響進行研究。實驗以VICON動作分析系統與三軸加速規針對實驗用橡膠球撞擊球拍時的相關資料進行擷取。自變項有5個球拍面撞擊點（中心點、3點鐘、6點鐘、9點鐘與12點鐘）、3種球體撞擊速度（42.63 m/s、58.98 m/s與65.78 m/s）和3種穿線磅數（20磅、24磅與28磅）。統計則以獨立樣本三因子變異數分析進行。結果顯示：一、不同撞擊點、撞擊速度與穿線磅數個別與彼此間都會影響羽球拍功能性表現。二、當球線聲音基頻（基頻）測量持續進行，基頻也隨之遞減，顯示球線會自然退磅；基頻以中心點最高，3點鐘與9點鐘基頻呈現左右對稱；另外穿線磅數越高，基頻也越高。三、球拍3點鐘與9點鐘扭轉應變較其他位置大；撞擊速度越快和穿線磅數越低，扭轉應變也越大。球拍中心點、12點鐘橈曲應變大於6點鐘還有中心點橈曲應變大於3點鐘、9點鐘的趨勢僅發生在三種穿線磅數的快速與中速撞擊下。3點鐘與9點鐘的扭轉和橈曲應變則無左右對稱。四、勁度有6點鐘>中心點>9點鐘>3點鐘>12點鐘的趨勢。五、在振動響應參數部分，振幅範圍有6點鐘>中心點>9點鐘>3點鐘>12點鐘的趨勢；撞擊速度越快，振幅範圍也越大。趨穩時間有12點鐘>中心點>9點鐘>3點鐘>6點鐘的趨勢。振動總功率有6點鐘>中心點>12點鐘>3點鐘>9點鐘的趨勢；撞擊速度越大，振動總功率也越大。六、阻尼比有中心點>3點鐘>9點鐘>6點鐘>12點鐘的趨勢。

In this research, the effect of different impact points, impact velocities and thread pounds on badminton racket functional performance parameters were aimed to study. VICON motion analysis system and three-axis accelerometer were used to gather data when experimental rubber ball hitting racket in experiment. Independent variables in this study were containing five impact points on racket (center, 3 o'clock, 6 o'clock, 9 o'clock and 12 o'clock), three rubber ball impact velocities (42.63 m/s、58.98 m/s and 65.78 m/s) and three thread pounds (20 pounds, 24 pounds and 28 pounds). Independent 3-way ANOVA statistical analyses were used to complete statistical work. Results showed: 1. Different impact points, impact velocities and thread pounds would influence badminton racket functional performance individually and mutually. 2. When the measuring of string voice’s base frequency (base frequency) ongoing, the base frequency was found decreasing. This proved the declination of string’s tension would happen. The base frequency on racket center was highest and on racket 3 o'clock & 9 o'clock positions were symmetrical. Furthermore, base frequency was higher when thread pound was more. 3. Torsion strains on 3 o'clock and 9 o'clock position of racket were bigger than other position’s. When impact velocity was higher and thread pound was lower, the torsion strains were bigger. The trends of racket center & 12 o'clock position’s bending strains bigger than 6 o'clock position’s and racket center’s bending strain bigger than 3 o'clock and 9 o'clock positions’ were merely happening on racket string strung on three thread pounds and rubber ball hitting racket in highest and medium velocity. 3 o'clock and 9 o'clock position’s torsion and bending strains weren’t symmetrical separately. 4. The trend of stiffness was 6 o'clock > center > 9 o'clock > 3 o'clock > 12 o'clock. 5. In the part of vibration response parameters, the trend of amplitude range was 6 o'clock > center > 9 o'clock > 3 o'clock > 12 o'clock. When impact velocity was faster the amplitude range was bigger. The trend of settling time was 12 o'clock > center > 9 o'clock > 3 o'clock > 6 o'clock. The trend of total vibration power was 6 o'clock > center > 12 o'clock > 3 o'clock > 9 o'clock. When impact velocity was faster the total vibration power was bigger. 6. The trend of damping ratio was center > 3 o'clock > 9 o'clock > 6 o'clock > 12 o'clock.

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