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題名 | 熱配馬達轉子對轉軸動態特性之影響與其有限元素建模之探討=The Effect on the Dynamic Characteristics of a Rotating Shaft by Interference Fitting the Motor Rotor and Its Finite Element Modeling |
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作者 | 陳炘鏞; 黃榮華; 楊錫凱; | 書刊名 | 技術學刊 |
卷期 | 21:1 民95.03 |
頁次 | 頁61-67 |
分類號 | 446.874 |
關鍵詞 | 高速主軸; 模態測試; 有限元素法; 轉子干涉配合; High speed spindle; Modal testing; Finite element method; In-terference fitting of rotor; |
語文 | 中文(Chinese) |
中文摘要 | 一般而言,分析一高速主軸的動態特性時,有限元素分析為一相當重要及常用的方法。然而,有限元素法的分析結果常會有所誤差,此誤差乃由於有限元素法所建立的模型與實際系統的差異所致。因此,本文提出以模態測試的結果修正有限元素法所建立的模型,使得有限元素模型能夠更加精準,並且能用其做更進一步的分析。另外,本文以一每分鐘三萬轉的馬達內藏式高頻增速器為研究對象,探討轉軸因轉子干涉配合所造成的動態特性變化,並提出可行的有限元素模型修正方式,由修正結果的比對顯示,此種修正方法具有其實用性。 |
英文摘要 | The finite element method is the major way to analyze the dynamic characteristics of a high speed spindle. However, the behavior of a system obtained by finite element modeling is different from a real system. The errors come from the difference between the finite element model and the real system. Therefore, we propose a modified finite element model method by using modal testing results. The modification can improve the accuracy of an original finite element model and can be used for further numerical analysis. In this paper, a 30,000 rpm speed-booster spindle with build-in motor is used as a study case. The interference fitting effect of a motor rotor is discussed. In this case study, we introduce a feasible modification approach to improve the finite element model. In comparison with results obtained by the modified finite element model and experiments, this improved method shows its practicability. |
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