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| 題 名 | Flight Time and Gap of Deep Granular Bed in a Shaker=振動床內粒子之飛離現象 |
|---|---|
| 作 者 | 蕭述三; 潘善徵; | 書刊名 | 中國機械工程學刊 |
| 卷 期 | 18:5 1997.10[民86.10] |
| 頁 次 | 頁459-465 |
| 分類號 | 446.11 |
| 關鍵詞 | 振動; 床內粒子; 飛離現象; Granular bed; Shaker; Gap; Flight time; Bifurcation; Vibrational acceleration; |
| 語 文 | 英文(English) |
| 英文摘要 | 當振動床上下振動時,床內顆粒體可能會短暫飛離床底,而形成間隙,此飛離時間 之不同造成不同的粒子運動型態。 本論文以影像處理系統測量於不同振動加速度幅度下之 飛離時間及最大間隙。文中並假設顆粒床為一整體,而以一簡易數學模式計算飛離時間及最 大間隙,並與實驗比較。於某些振動加速度範圍內,顆粒床會有兩種不同之飛離時間。 result in different types of motion phenomena. The flight time and the maximum gap are experimentally measured by a set of image processing system in this study. A simple mathematical model for a completely inelastic bouncing ball is borrowed the calculate the flight time and gap which are compared with the experimental data. This model slightly over predicts the experimental results because of some assumptions. The displacements of the bed and the base plate are computed and analyzed. At some ranges of vibrational accelerations, there may exist two different flight times and the phenomenon is called bifurcation. The calculated results show that there are several kinds of motion behaviors in the bed and the results are similar to the experimental observations. |
本系統中英文摘要資訊取自各篇刊載內容。