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題 名 | 轉子撓扭耦合共振之非線性分析=Nonlinear Analysis of a Rotor Due to Coupled Lateral-Torsional Vibration |
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作 者 | 康淵; 簡守謙; 賴志錫; | 書刊名 | 中原學報 |
卷 期 | 24:1 1996.01[民85.01] |
頁 次 | 頁47-60 |
分類號 | 446.875 |
關鍵詞 | 轉子; 撓-扭耦合共振; 混沌振盪; 分歧; Rotor; Coupled lateral-torsional resonance; Chaotic oscillation; Bifurcation; |
語 文 | 中文(Chinese) |
中文摘要 | 轉動機械在撓-扭稱合共振之轉速範圍內,其運動之行為極為複雜且不規則,此種運動模式,比起其他速度範圈,顯得激烈而混亂,往往會造成機構之疲勞,而引致損壞。根據系統之非線性動態分析,可以模擬出混沌現象的發生或分歧(Bifurcation)轉變過程,其運動之行為將趨於混亂並可能喪失週期性。 本文將針對兩種撓-扭稿合之轉子來探討賴合振動對系統非線性動態行為所造成之影響及其運動模式,作為旋轉機械設計上考慮之因素。 而對於非線性方程式之分析方法,在此採用四階之Runge-Kutta法作為數值之積分,解得系統橫向振動與扭轉振動在彼此稱合之條件下之動態行為,並利用相平面,對時間之位移軌跡,以及Poincare'切平面等之定性方法來求系統於某些條件下之運動行為,並利用分歧圍來觀測系統之整體動態行為變化。 |
英文摘要 | Transverse vibrations of a rotor-bearing system are coupled with torsional oscilations through mass essentricity. The effect in coupled torsional-transverse vibration is that combination-resonances may be induced and the rotor has destructively large aþ1plitudes. In this study, two rotor systems with coupled tor sional transverse vibrations are considered. The first model of an unbalanced rotor, çlriven by torsion-flexible shaft through a coupling is used to investigate the effect of load torque app1ied on overhung disk. The second model of an unbalanced rotor mounted between two bearings. The nonlinear equations of motions of these rotor systems are solved numerically by using Runge-Kutta method. The results of time history, frequency spectra, phase plane, Poincare' map, and bifurcation diagram have been obtained. The quasi periodic respρnses and chaotic motions can be observed within combination resonances. |
本系統中英文摘要資訊取自各篇刊載內容。