transient vibration 中文意思是什麼
transient vibration
解釋
過渡振動-
Introducing the theory and application of boundary element method on the sound radiation, giving the process of solving vibration noise radiation problem using boundary element analysis software ; presenting the coupling theory and the combination analysis of finite element method and boundary element method, and doing relevant analysis based on close drum shell ; programming the noise data simulation program using the numerical calculation software, simulating the acoustic and pressure data of a key point in the transient response acoustic field of the close drum shell, realizing the audibility of the noise, using the virtual reality tools to simulate the vibration noise of the drum shell ; combining the finite element method and boundary element method to analyze the vibration noise radiation of some gear box, and completing the whole simulation process of the vibration noise of the gear box
綜合介紹了邊界元法在聲輻射問題上的理論及應用；並給出了運用邊界元法分析軟體求解振動聲輻射問題的過程。闡述了有限元法和邊界元法的耦合理論及組合分析方法，並以封閉鼓形薄殼為分析對象進行了相應的分析。利用數字計算軟體編制了噪聲數據模擬程序，並模擬了通過組合方法分析封閉鼓形薄殼瞬態響應聲場而獲得一關鍵點的聲壓數據，實現聲音的可聽化，隨后通過虛擬現實工具實現了該情形下橢球殼振動噪聲的虛擬模擬。 -
The beam - on - dynamic - winkler - foundation ( bdwf ) model was utilized to determine the lateral dynamic response of a pile with finite length in a viscoelastic soil. an analytical solution was obtained in the time domain for the vibration of a pile under a laterally cyclic force applied at the pile head. based on the solution, the transient response of the pile loaded by semi - sine force was acquired with superposition principle
首先，基於動力winkler模型（ bdwf ）對粘彈性地基中有限長樁的水平動力響應問題進行求解，得到了單樁在樁頂受水平簡諧荷載作用下的時域解析解，並在此基礎上通過疊加原理得到了半正弦激振條件下的瞬態解析解。 -
According to the theory analysis and engineering practice, the application of natural vibration features in bridge inspection is introduced. during the transient dynamic analysis of pubugou cfst arch bridge, the time history responses of the structure under uniform velocity moving load and impact load are analyzed, and the amplification coefficients of deflection and internal forces of the structure are intensively analyzed
在瀑布溝大橋的瞬態動力分析中，模擬分析了當移動荷載以不同速度通過橋面時的時間歷程動力響應以及在沖擊荷載作用下橋跨結構的時間歷程動力響應，並對橋跨結構在移動荷載和沖擊荷載作用下的動力放大系數作了較為詳細的分析。 -
Although self - syn chronous vibration and vibratory synchro nization transmission have been applied, in, mechanical engineering successfully ， the, transient processes of self - synchron ization and synchronization transmission, in vibratory machines are still obscure. the physical processes of vibratory mac hines from asynchronous condition to syn chronous condition or from one type of s ynchronous condition to another co uld not be explained quantitatively acco rding to available, mechanical models. in this paper the pro blem is addrested specially
自同步振動和振動同步傳動在機械工程上已獲得成功應用，但是振動機械實現自同步振動和振動同步傳動的過渡過程長期以來卻一直不明確，利用現有的振動機械模型還不能定量解釋系統從不同步到同步、或是從一種同步狀態過渡到另一種同步狀態的物理過程。 -
Calibration of vibration and shock pick - ups - method of test for transient temperature sensitivity
振動和沖擊傳感器的校準.瞬變溫度靈敏度的試驗方法 -
Methods for calibration of vibration and shock pick - ups. testing of transient temperature sensitivity
振動與沖擊傳感器的校準方法瞬變溫度靈敏度測試法 -
Based on the theory of fluid dynamics. transient - flow and vibration, the structure parameters of the air - volume ( such as the volume and position of the air - volume ) affect the pressure oscillation in piping system is put forward, and the designing method for the parameters of the air - volume according to the role of the air - volume is provided
本文根據流體力學、瞬變流以及振動學的理論，研究了管道系統中空氣室結構參數（空氣室的容積，安裝位置等）對壓力脈動的變化規律，提出了根據空氣室工作任務要求設計空氣室的計算方法。 -
Then, taking into account the effect of the compression of the approach roadway and the differential slope of the bridge slab, the author analyzes the dynamic response of man - vehicle - road system when the vehicle approaches and leaves the bridge by means of laplace transform, the curve of man ' s acceleration versus time, the vertical force between the vehicle and road versus time, the man ' s maximum transient vibration value and the maximum force between the vehicle and road are got, and the program about the calculating progress above are edited. based on the analysis above, the influence on the maximum transient vibration value of some parameters about the vehicle and road such as the movement direction and speed and weight of the vehicle, the differential slope of the bridge slab and the length of the approach slab, are studied, and some conclusion are given
分上橋和下橋兩種情況，考慮車路耦合和橋面沉降坡差的影響，對車輛通過設和不設搭板的路橋過渡段時「人?車?路」系統的相互作用用拉普拉斯變換法進行了動力響應分析，得到了人的加速度及路面對車的垂直作用力隨時間的變化曲線、人的加速度最大瞬態振動值和路面對車的最大作用力，分析了車輛的行進方向、速度和載重，橋面沉降坡差和搭板長度等車和路各參數對計算結果的影響，並編制了相應的計算程序。 -
This thesis, on the basis of modern theories of vibration, ked analysis and finite element method, sets up a kinetic model of piston - linkage mechanism of diesel engine, by i - deas software of sdrc usa, which involves the effect of joint clearance in mechanism. by the presumption of " transient structure " in ked analysis, the mechanism " s dynamic responses in every transient structure conditions are calculated, and it provides a reliable theory basis for the optimization design of diesel engine
本課題基於現代機械彈性動力學理論以及有限元分析方法，利用美國sdrc公司的- deas軟體，對含運動副間隙的柴油機的活塞、連桿機構建立了動力學模型；運用ked分析中的「瞬時結構」假定，計算出了機構在各瞬時結構條件下的動態響應，從而為柴油機優化設計提供了可靠的理論依據。 -
The influence of transient soft terrain on vertical vibration of vehicle
松軟路面突變性對車輛垂向振動的影響 -
By constructing a simplified model of the beam in computer, every mode of vibration has been analyzed through finite element method on ansys platform. both transient analysis and dynamic analysis have been carried out by properly converting the real loads to the equivalent ones, which are comparatively easy to manipulate for the software
建立了梁的簡化模型，進行了智能梁結構的有限元分析，得到了梁的各階模態，並在此基礎上利用等效載荷對梁進行了動力學分析及瞬態響應分析，得到了梁的各階模態下驅動器放置的最優布局。 -
Transient heating has a serious effect on the characteristic of structural natural vibration
摘要瞬態加熱會嚴重影響結構的固有振動特性。 -
Because of harsh and complicated operation environment, as well as transient and variable loads, vibration of piezoelectric laminated shell is a kind of sophisticated stochastic vibration process in fact
由於工作環境復雜、惡劣，所受的載荷瞬態多變，壓電層合殼的振動是一個非常復雜的隨機振動問題。 -
A mathematical model of the vibration at the upper segment of a pile when there exist severe defects is put forward based on theoretical analysis, and the curve characteristics of its low strain test is described according to engineering practice under condition of transient shock
摘要從理論上給出了當基樁存在淺部嚴重缺陷時，在受到瞬態激振力的情形下，樁體上段振動的數學模型，並結合工程實踐，描述了其低應變實測曲線的特徵。 -
Abstract : a mathematical model of the vibration at the upper segment of a pile when there exist severe defects is put forward based on theoretical analysis, and the curve characteristics of its low strain test is described according to engineering practice under condition of transient shock
文摘:從理論上給出了當基樁存在淺部嚴重缺陷時，在受到瞬態激振力的情形下，樁體上段振動的數學模型，並結合工程實踐，描述了其低應變實測曲線的特徵。 -
According to the short lasting time of the vibration above, the maximum transient vibration value of the acceleration is selected as the comfort index, which is also the criterion to decide if the differential settlement is tolerable
由於該振動是持續時間很短的瞬態振動，振動舒適性指標採用人的加速度最大瞬態振動值mtvv ，它也為橋頭跳車嚴重與否的衡量標準。 -
On the other hand, heavy tamping is also a transient impact load that will produce strong ground vibration
同時，從加載角度考慮，強夯又是一種瞬時沖擊荷載，作用在地面時產生振動問題。 -
The four parameters ( spring inclination a, the frequency of excitation force w, the amplitude of excitation force f, the spring stiffness k ) are the major factors that take great influences on the vibration plate. in order to analyzing the influences of four parameters, the virtual prototype of vibration plate is built in ansys to get inherent frequency from modal analysis. thorough transient analysis in ansys, the curves of displacement n velocity and acceleration is presented
為了分析這四個參數對系統的影響，首先在ansys中建立振動排秧盤的虛擬模型，採用有限元方法對模型進行了模態分析，得到振動排秧機構的固有頻率；同時對模型進行動力學分析，分析排秧盤的振動量、速度及加速度，並得出相應數據的曲線圖；另外，校核了主要元件彈簧的疲勞強度及使用壽命。 -
Based on the dynamic responses of the structures under sinusoidal excitation with several frequencies through transient dynamics analysis, the influence of natural frequency on the vibration characteristics of the biomimetic wings is discussed further more
隨后還進一步考察了結構在受到幾種不同頻率正弦激勵下的動態響應，分析了固有頻率對其結構振動特性的影響。 -
Using the optimization control method of the moderm control theories, the time - varying control and output - feedback control the authors study the variable structure active control over the rotor vibration with sma, especially the method of restraining the transient response of the rotor vibration. they get the rule of the optimum control force and the optimum control electric current and discuss the influence of variable stiffness on the total system stiffness through analyzing the structure of sma controller. they also indicate the shortcoming of the orthodox design method of a controller, especially the imbalance phenomenon caused by the lack of the rod stability, and propose a new method for improvement and items which ought to be paid attention to in the design stage
運用現代控制理論中的最優控制方法，引入時變控制和輸出反饋控制，研究利用形狀記憶合金對轉子振動進行變結構主動控制，特別是抑制轉子振動的瞬態響應的方法，得出了最優控制力和控制電流的強度變化規律；通過分析形狀記憶合金動作器的結構，探討了變剛度支承對系統總體剛度的影響，指出了傳統設計方法的不足之處，特別是由壓桿穩定性不足引起的失穩現象，並提出了改進的方法和在設計中值得注意的問題
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