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題 名 | Dynamic Response of a Spinning Disk Coupled with a Moving Beam System Subjected to Impulsive Excitation=旋轉圓盤耦合移動臂承受衝擊之動態響應 |
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作 者 | 張英俊; 賴光哲; 陳國卿; | 書刊名 | 大同學報 |
卷 期 | 28 1998.11[民87.11] |
頁 次 | 頁307-318+472 |
分類號 | 446.11 |
關鍵詞 | 旋轉圓碟片; 耦合系統; 移動懸臂; 動態響應; 空氣薄膜剛性; 阻尼; |
語 文 | 英文(English) |
中文摘要 | 本篇論文對一旋轉圓碟片與一可移動懸臂二者耦合系統,承受半週期sine波形的衝擊,作數學模擬及響應分析。本研究中考慮整個懸臂長與碟片間存在空氣薄膜剛,性(ks)和阻尼(Cs)對系統動態響應的影響,偶合系統使用Ga1erkin方法將無限多自由度化成有限個維度的微分方程式。數值計算結果則應用Newmark方法作疊代處理。可得知當系統承受圓碟片(0,0)mode自然週期之半的1至2倍衝擊時間範圍內,磁頭與圓碟片均有最大位移(peak)產生,當空氣薄膜剛性(ks)在10�鐲/m時,則磁頭有最大位移產生,就考慮包括空氣薄膜剛性和阻尼條件而言,磁頭與碟片間的相對位移有增加的現象。 |
英文摘要 | This paper describes the system modeling, theoretical formulation, and response analysis for a combined system of a spinning disk and a movable beam. The disk-beam coupled system is subjected to half-sine pulse impulsive excitation. This study includes the air-induced film stiffness and damping between disk and overall length of the beam. A solution is obtained using the multi-modal expansion approximation and applying the Galerkin method to the governing equations of the system. Numercial results are obtained using the New mark method. It's found that the displacement of the beam have maximum value when the impact duration T is about 1-2 times the natural half-period τ00 of the fundamental (0,0) mode . When air stiffness kg is 10�� N/m, the displacement of the beam has maximum value which will remarkably affect the shock-proof performance. When taking into account the air stiffness and damping, the relative displacement between beam and disk will be increased. |
本系統中英文摘要資訊取自各篇刊載內容。