external excitation 中文意思是什麼
external excitation
解釋
外部激發- external : adj 1 外部的，外面的；【哲學】外界的，客觀的，物質的。2 表面上的 （opp intrinsic）; 膚淺的，淺薄...
- excitation : n. 1. 刺激，興奮，激發，鼓舞。2. 【物理學】激發；【電學】激勵、勵磁。3. 【植物；植物學】激感（現象）。
-
The method of multiple scales is used to determine the equations of modulation of amplitude and phase. the steady state response can be obtained by solving a couple of algebraic equations, which have been achieved by careful deduction under some conditions. and because of the complexity of the equations, programs are necessary to solve the equations mentioned above, and certain graphs are presented. based on chapter two, in chapter three, the method of multiple scales is introduced to the study of the multiple - dimensional nonlinear stochastic systems under random external excitation
在第二章基礎上，第三章將多尺度法引入到相應的隨機系統的研究中；嚴格推導了系統的約簡方程，用矩方法求出穩態解應滿足的方程，獲得一些結果；並且數值模擬結果與理論推導的結果是一致的；並注意到，與其對應的確定性系統相比較，系統響應從周期解變為近似周期解，系統的相軌線從極限環變為擴大的近似極限環；隨著激勵帶寬的增大，此擴大的近似極限環的寬度將增大。 -
Are uncertain and should be regarded as random variables, therefore the reinforced concrete frame is stochastic structure inherently, and then its motive equations converted to combined random differential equations for the uncertain parameters and external random excitation. these equations were solved by order - orthogonal expansion method with pseudo - excitation method, and then the statistic stochastic responses of random structure were obtained. at last, based on the stochastic cumulative damage model with double parameters developed by park, formulas were formulated for calculating structural earthquake damage probability using the structural reliability theory ( mainly jc algorithm ) in extensive random space
首先對受地震激勵的剪切型鋼筋混凝土結構進行建模，用隨機等效線性化方法將二階非線性微分方程組化成一階線性微分方程組（或稱之為狀態方程） ；再考慮材料等參數的隨機性，則狀態方程成為復合隨機微分方程組，將擴階系統方法和虛擬激勵方法推廣並應用於這個復合隨機微分方程組，求出結構的隨機響應量的統計參數；最後採用隨機累積損傷破壞準則，在廣義隨機空間內，用jc演算法求解失效概率，進而求出結構的抗震可靠度。 -
The numerical results from the phase portraits, the period - doubling bifurcation and the poincare sections show that external stochastic excitation always masks the regular motions of a deterministic system and plays a dissipative role to the motions of the system, which causes the chaotic motions of the system to arise easily, though the period - doubling bifurcation is delayed
系統的相圖、倍周期分岔圖以及龐加萊映射圖等方面的數值結果表明，外加隨機激勵的作用往往掩蓋原確定性系統內在的規則運動，對原確定性系統的運動具有較典型的分散作用，可延緩系統的倍周期分岔，也可使得系統內在隨機行為提前發生，即可使得系統更容易出現混沌運動。 -
In present dissertation, dynamical process of transition from the vortex state to the core state with lower energy and no angular excitation after removing the external rotating perturbation which makes the vortex state formed in bec is discussed firstly
論文首先討論外界旋轉的微擾使bec產生渦旋，之後被撤掉，渦旋態向能量低、無角動量激發的核心態躍遷的動力學過程。 -
In this dissertation, the response in two - degree - of - freedom nonlinear system under random external excitation is investigated by using analytical and numerical method
本文用解析和數值方法研究了窄帶隨機噪聲外激下非線性系統的響應問題。 -
The developed system provides a test analysis platform for the study of the effects of the size parameters of the pec and the frequency and the amplitude of the external excitation on the electricity generating capacity of the pec
該測試系統為研究壓電陶瓷尺寸參數、外界激勵的頻率和振幅對壓電陶瓷發電能力的影響提供了測試分析平臺。 -
The feasibility of evaluating the pre - stress with the measured frequencies of a structure under external excitation, and the influence of the mean normal stress on the mechanical properties of a column was also discussed
第七章提出了用固有頻率的測試評估預應力效果的思想，論證了其技術可行性。指出了鋼管內填物的壓力產生的初應力對臨界壓力的有利影響。 -
Traditional static design methods can hardly resolve problem of dynamic design. only through exploring the interrelationship among the structure ' s natural characteristics, the external excitation and dynamic response of system, that is dynamic design, the problem can be resolved
傳統的靜態設計難以解決動態特性問題，只有通過對結構的固有頻率，外界作用和系統的動力響應三者之間的聯系進行研究，即動態設計，才能有效的解決這個問題。 -
It is analyzed that the values of external excitation, the internal damping of the shaft and the depth of the crack have effects on the amplitude frequency response curves. in chapter 5, the bifurcation and chao s of a rotor system are studied. the bifurcation parameter sets of the motion equation are determined by using the theoretical method
從理論上確定了在垂直平面內振動的裂紋轉子運動方程的分叉參數集，且用數值方法驗證了理論分析的正確性，同時，還利用melnikov函數法給出了系統發生混沌運動的臨界條件，最後，利用數值方法研究了考慮渦動影響的轉子系統的動力特性。
分享友人