nonlinear vibration system 中文意思是什麼
nonlinear vibration system
解釋
非線性振動系統-
So this base isolation technique has profound prospects. unfortunately there exist definite difficulties in the calculation because of the nonlinear of the base friction force. now, both the equivalent damping method and the numerical calculatin of the vibration response of the base - isolated buildings are frequently used in the calculation of the seismic response of the base - isolated building. however both of them have certain drawbacks. in this paper, the response of the building with base - isolation system is derived by the method of fourier expansion for the friction force and the earthquake response. at the same time, the sliding vibration character of inertia of a single mass structure and the sliding vibration response of a muti - mass structure are discussed. the stable condition of the sliding base isolation system of a structure is given. in the end, two circes of base fixation and base sliding are analyzed by adopting ansys
本文利用對摩擦力和地震響應進行付氏級數展開的方法導出了基底具有摩擦隔震系統的地震反應。同時，文中從研究單質點結構的滑動振動慣性力入手，進而對多質點結構體系滑動振動反應進行探討，分別給出了結構滑動隔震的自身穩定條件。最後，本文利用ansys對基礎固定和基礎滑移隔震兩種工況進行了動力模擬模擬分析，進一步證實了基礎滑移隔規律。 -
On the basis of this equation, the general differential equations of coupled bending, torsional and pendular nonlinear vibration about rotor with unbalance character and rubbing character are deduced. the bifurcation and chaos behavior especially the influence on bifurcation and chaos behavior of impact and rubbing fault rotor system
應用數值方法研究了碰摩轉子的彎扭擺耦合振動相應的復雜動力學行為，重點研究了轉子轉速、偏心量等系統參數對碰摩轉子彎扭擺耦合振動的分岔和混沌行為的影響以及扭轉振動和擺動振動對彎曲振動的影響。 -
However, due to the elastic deflection and vibration of the links, the flexible manipulator becomes an infinite dimension mimo system with distributed parameters, and is highly nonlinear and strong coupling. therefore, the model and the control of flexible manipulator are of great significance both in theory and in application
然而也正是由於連桿存在彈性變形和振動，使得柔性機械手成為一個高度非線性的、分佈參數的、強耦合的無窮維多輸入多輸出系統， ，因此其建模和控制也具有重要的理論意義和應用前景。 -
It is showed in wind - vehicle - bridge system vibration analysis that cross wind action can remarkably increase the response of bridge and vehicle. generally, the response of bridge and vehicle are increased with wind speed and train speed, one case that vehicle is on leeward side of deck is more unsafe than another case that vehicle is on windward side of deck. nonlinear factors can more influence bridge than vehicle
風?車?橋系統耦合振動分析結果表明：考慮風的作用會顯著增加車輛和橋梁的響應；車輛和橋梁的響應總體上隨風速和車速的提高而變大；車輛位於橋道背風側時較迎風側時更為不利；非線性因素對橋梁的影響較車輛的要大。 -
Reagarding the inertia force of rotor as the force acting on the shaft, the effect of thermal expansion upon the natural transversal vibration frequencies of rotor system is studied by a new nonlinear asymptotic method
摘要把轉子的慣性力看成作用在軸上的外力，採用新的非線性漸近法研究熱膨脹對轉子系統固有橫振頻率的影響。 -
An adaptive fuzzy system for nonlinear active control of piezoelectric composite beam vibration
壓電復合材料結構模糊自適應前饋振動控制 -
In the paper, series of definitions about chaotic dynamics system are summed up, several methods for judging whether a system is a chaotic one is discussed, property analyses of chaotic systems is studied and rudimentary characteristic of chaotic motion is generalized. two kinds of nonlinear systems are analyzed in this paper. melnikov function is used to study the vibration systems
根據混沌運動的特徵，本論文主要對兩類具有廣泛代表意義的典型非線性系統問題進行了討論，利用數值分析的方法對系統進行了分析，得出系統出現混沌的閥值；然後綜合運用相圖分析、直接觀察時間序列和李雅譜諾夫指數法對系統是否產生混沌運動進行了描述和刻畫。 -
As a result of the heightening of mechanical operation speed and the application of new materials and new structures, the nonlinear dynamic behavior in rotating machines is becoming increasingly outstanding and important. nonlinear dynamic phenomena in rotating machines cant be described, explained and predicted by rotordynamics based on linear system theory. along with the deepening and permeating of nonlinear scientific research, the nonlinear vibration of rotor systems has become an attractive field in recent years. from a point of view to set up the distinct corresponding relations between vibration states and failures of rotating machines, main advances in the research of rotor nonlinear vibration are summarized, and typical nonlinear dynamic phenomena and their forming mechanism are also summed up in the paper. the aim of the paper is to enrich the diagnostic knowledge base of rotating machines. 55refs
由於機械運轉速度的不斷提高和新型材料、新型結構的推廣應用，旋轉機械的非線性動力學行為日顯突出和重要.基於線性系統原理的轉子動力學理論與方法難以對實踐中出現的豐富的非線性動力學現象作出準確的描述、闡釋和預測.近年來，隨著非線性科學研究的深入和滲透，轉子系統非線性振動已成為應用力學和機械工程領域的研究熱點之一.從有利於建立旋轉機械振動狀態集與故障集之間的映射關系出發，綜述了近年來轉子系統非線性振動研究的主要進展，總結了轉子系統中出現的典型非線性動力現象及其產生機理，目的在於豐富旋轉機械故障診斷知識庫.參55 -
Taking the bending stiffness, cable sag and cable inclination into consideration, the space vibration control of the cables using the visco - elastic dampers in cable - stayed bridges is investigated by joining the center difference method and the state space strategy. both the maximum modal damping ration and the optimal damper size are obtained, then the practical suggestions are proposed for the design of the dampers. the space nonlinear vibration equations of the cable - damper system are derived, and a new hybrid method for solving the cable - damper system is presented by combing the newmark method and pseudo - force technology
綜合考慮了拉索抗彎剛度、垂度的影響，研究了粘彈性阻尼器對斜拉橋拉索的空間振動控制，聯合中心差分方法及狀態空間法，得出了拉索麵內、外振動各階模態可能達到的最大阻尼比及相應的最優阻尼器系數，並對斜拉橋拉索的阻尼器設計提出了參考建議：考慮拉索抗彎剛度、垂度及幾何非線性，導出了索-阻尼器系統的空間振動非線性方程組，結合newmark方法及偽力（ pseudo - force ）方法，創新地提出了求解非線性方程組的雜交方法，根據拉索-阻尼器系統的阻尼特性，在各種荷載作用下，對索-阻尼器系統的非線性瞬態振動響應進行了研究，從系統響應的角度更加直接地驗證了阻尼器的控制效果。 -
In the paper, active control to rotor vibration with sma is studied : 1 ) the material performance of sma, especially the coupled relation of strain, stress and temperature, is studied in nonlinear coupled thermoelasticity theory and the linear result is modified ; 2 ) the nonlinear dynamic behavior of rotor system with sma bearing is studied in the nonlinear theory and the dynamic stability theory and the deference of the soft / hard nonlinear system is pointed out
1 ）運用非線性熱彈性耦合理論研究記憶合金材料的力學性能，特別是應力、應變和溫度三者之間的耦合關系，改進了原有的線性結果。 2 ）運用非線性理論和運動穩定性理論研究帶有記憶合金支承的轉子系統在非定常狀態的非線性動力學行為，指出了軟、硬非線性系統的區別。 -
The paper studied controlling rotor vibration with the super - elasticity of sma and sfd, set up the new equation of sys tern vibration according to the stress - strain curve of sma in super - elasticity state, used the nonlinear theory and the dynamic stability theory to study the vibration of rotor controlled by sma, discussed the stability condition of the system, obtained the relationship of system parameters when bifurcation was appeared, supposed a method that improves the stability of rotor system and restrains vibration amplitude though changing parameters, and finally validated the effect of restraining vibration of the improved system through emulation
摘要研究利用形狀記憶合金的超彈性和擠壓油膜阻尼器控制轉子振動，利用形狀記憶合金在超彈性狀態下的應力應變曲線，建立了新的系統振動方程，運用非線性理論和運動穩定性理論研究轉子在形狀記憶合金控制下的振動狀態，討論了系統的穩定性條件，獲得系統發生分岔時系統參數之間的關系；並提出了通過改變參數來提高系統穩定性和抑制振幅的方法，最後通過模擬驗證了改進后的系統振動抑制效果。 -
The way to eliminate chaos phenomenon through adjusting system parameters is indicated. the nonlinear dynamic behavior of journal bearing - rotor system in large parameter space is studied in numerical integral method and floquet theory and the first and second bifurcation behavior of nonlinear rotor system are discussed ; the concept is advanced that realizing the controllable nonlinear stiffness with sfd with the soft - nonlinear of sma in the super - elasticity state to make the vibration amplitude of system always be in the small solution state to reduce the vibration amplitude of rotor system
運用數值積分方法結合floquet理論對滑動軸承-轉子系統的大參數范圍非線性動力學特性進行了全面的研究，詳細地討論了系統的一次和二次分岔行為； 5 ）提出了用形狀記憶合金在超彈性狀態下的軟非線性，結合擠壓油膜阻尼器實現系統剛性的非線性可控，降低系統在非定常狀態下的最大振幅的構想。 -
We apply fuzzy control theory to active control over engine body vibration, design fuzzy control system which combines intelligent control with feedback control. this control strategy mends the flaw of complexity, nonlinear and uncertainty when we use traditional control method. by measuring rotate speed and vibration speed of i. c
在主動控制的基礎上，採用了模糊控制的演算法，設計了內燃機整機振動模糊控制器，改進了傳統控制方法在處理振動復雜性、非線性和不確定性等方面的缺陷，通過測量內燃機轉速和內燃機整機振動速度信號，動態地改變動力減振器的剛度，使減振器的固有頻率跟隨內燃機整機振動激勵頻率的變化，達到降低內燃機振動的目的。 -
Nonlinear lateral vibration of the hoist rope in vertical hoist system
垂直提升系統中鋼絲繩的非線性橫向振動研究 -
In this thesis, a multi - disk rotor supported by two plain journal bearings is used for the numerical and experimental studies. the one aim is to analyze the nonlinear dynamic characteristics of the rotor system under different varying parameters ; the methods of online elimination of the oil whip and subharmonic vibration are developed and studied also. besides the expression of the nonlinear oil film force is proposed, so that the unbalance of the nonlinear rotor system may be identified online
作者在總結了前人大量的有關非線性振動研究工作的基礎上，確立了本文的研究目標：一是以工程應用為背景，研究轉子-軸承系統由非線性油膜力引起的非線性振動特性以及各種影響因素，力圖通過對轉子-軸承系統非線性振動特性的分析，找到切實可行的在線消除油膜振蕩的辦法；二是研究非線性油膜力的表達方法式，使非線性轉子系統的不平衡量在線識別成為可能。 -
In the theoretical analysis, first the dynamics model of the prepressing - contact spring - damping system was established by vibration theory. then the stability of the solution of this system was studied base on the qualitative theory of nonlinear vibration
在理論分析方面，首先根據振動理論建立預緊接觸式彈簧阻尼系統的力學模型，然後利用非線性振動的定性理論研究系統周期解的穩定性。 -
Study on nonlinear vibration of an elastic rotor bearing - foundation system
基礎系統的非線性振動研究 -
Stability of rotor system with nonlinear vibration
轉子軸承系統渦動的穩定性分析 -
On the existence of periodic solutions for nonlinear vibration system
非線性振動系統周期解的存在性 -
Analysis to nonlinear vibration of a motor - elastic linkage mechanism system
彈性連桿機構系統非線性振動分析
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