瞬變作用 的英文怎麼說
中文拼音 [shùnbiànzuòyòng]
瞬變作用
英文
transient effect-
The equations of motion governing the axisymmetric elastic deformation of finite orthotropic cylindrical shells, involving the effect of transverse shear and rotational inertia, are derived. by applying the reverberation method, the displacement and the resultant forces of the shell in the phase space are expressed. then the transient waves in the finite orthotropic cylindrical shell subjected to the axisymmetric impact are obtained by using inverse laplace transforms. furthermore, the transient solutions are decomposed to the generalized ray integrals and computed numerically
分析了計及剪切變形和轉動慣性的有限長正交異性圓柱殼中彈性瞬態波的傳播問題,採用回傳矩陣法,在相空間中給出了位移和內力的表達式。再利用laplace逆變換,得到正交異性圓柱殼受軸對稱沖擊作用時彈性瞬態波解,然後將其分解為若干廣義射線積分之和,並用數值方法求解之。Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively
本文對大圓環直線感應電機進行了深入細致研究,內容包括: ( 1 )本文採用有限長行波面電流作用於有限長鐵芯上的模型,引用了氣隙磁場一維解,研究了單層繞組磁場,奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較,簡單介紹了二維解; ( 2 )用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析,並分析了結果; ( 3 )用軟體進行了額定電壓下的瞬態分析,得到了轉矩,位移,轉速隨時間變化曲線圖,利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較,採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證,由實驗測得了三相電流波形,並與計算結果進行了比較,對其不對稱性進行了定性分析。First, the dynamic stability of braid composite cylindrical shells with the influences of some main factors is introduced. the general governing equations for the nonlinear dynamic stability is obtained. by the hamilton principle. the creep buckling analysis of braid composite cylindrical shells under axial compression and the dynamic stability under nonconservation force are discussed as emphases. in creep buckling question, by means of theoretical analysis, the instaneous critical load and durable critical load of viscoelastic braid composite cylindrical shell under axial compression are obtained and the numerical example is given
首先介紹了編織復合材料圓柱殼在幾種主要因素影響下的動力穩定性問題,用hamilton原理建立非線性動力穩定性問題的一般性基本方程。然後重點討論了編織復合材料圓柱殼軸壓下的蠕變屈曲問題及非保守力作用下的屈曲問題。對蠕變屈曲問題,通過理論分析來得到了編織復合材料圓柱殼的瞬時彈性臨界載荷和持久臨界載荷,給出了具體的算例。Ip3 is one of the key factors for ca2 + to release from calcium - storage and for oocytes to be activated. in this experiment, ip3 was guided into cytoplasm by instant holds on cell membrane which were made by electric stimulation, calcium - storage in cytoplasm was opened up with ip3s second messenger, and the effects of ip3 on artificial activation of oocytes was evaluated, with ca2 + waves of zygote being imitated
本實驗利用電激活過程中卵母細胞膜上形成的瞬間孔洞,向卵子內導入一定量的ip _ 3 ,通過ip _ 3第二信使途徑,打開胞內鈣庫,模仿自然受精過程中卵母細胞內ca ~ ( 2 + )的波動性變化,研究電場導入ip _ 3對小鼠卵子的激活作用。The main circuit is consisted of 18 thyristors circuit and protection circuit. with the help of control subsystem, it can get the output of low frequency voltage ( current ) with the shape of sine wave ; the core of the control subsystem is the cpu of 87c196kc, and the synchronization circuit, the pulse - widen circuit, and the power - enlarged circuit form the accessorial subsystem of the control system. it possesses all the functions of digital triggering, digital tuning, analog / digital conversion ; the input transfer can isolate the input and output ; and the circumfluence reactor can reduce the circumfluence
主迴路採用由18個晶閘管組成的三相零式電路,並輔以晶閘管的保護電路,通過控制可以得到低頻正弦波的電壓(電流)輸出;控制迴路主要以87c196kccpu為核心,其外圍電路包括同步電路,脈沖拓寬電路,功率放大驅動電路等,完成了數字觸發、數字調節、模數轉換等功能;進線電源變壓器具有變壓和隔離作用;環流電抗器則實現了有效抑制主迴路瞬時脈動環流的功能。Bits supplies the synchronous timing signal to these equipments inside the telecommunicationt building, such as dps, atm, no. 7, dxc, tm & adm in sdh, don and in etc. the related techniques are involved in the content of synchronization ne twork, timing distribution, the timing signal transportations x impairments etc. the second chapter tells the structure and the function of the building integrated timing system. the third chapter summarizes the digital synchronization network techniques, which emphasizes the basic concept of synchronization networks analyzes the necessity of building the synchronization network and introduces all kinds of synchronization methods. the fourth chapter represents the transportation of the synchronization signal
本文第二章講述了通信樓綜合定時系統的構成及作用:第三章概述了數字同步網技術,著重描述了同步網的基本概念,分析了建立同步網的必要性,講述了各種同步方法;第四章闡述了同步定時信號的傳輸;第五章介紹了bits設備所支持的同步狀態消息;第六章、第七章為本文的重點,通過對時鐘信號建立數學模型,從理論上分析時鐘內部噪聲和相位瞬變產生時鐘定時信號損傷的原理,企圖尋找到更好地控制頻率漂移的方法。The analysis and synthesis forecast of outburst of the ordovician water caused by fallen column in northen type coal mine
瞬變電磁法在預測任樓礦導水陷落柱中的作用The major research areas of a ship against non - contact underwater explosion include four sectors, namely, ( 1 ) the characteristics of fluid field disturbed by an underwater explosion ( loadings of underwater explosion ) ; ( 2 ) the analysis of transient fluid - structure interactions, and the corresponding dynamic responses of the ship ; ( 3 ) safety assessment of the ship structure undertaking the elastic - plastic dynamic responses ; and ( 4 ) determination of the shock environment imposed on the shipboard equipments, and evaluation of shock protection design
即非接觸水下爆炸的流場特徵(水下爆炸載荷) 、瞬態流場與結構相互作用所決定的艦船動響應分析方法、以彈塑性動變形響應分析為依據的艦船結構水下爆炸安全性評估與防護技術、以船體結構動響應為輸入條件的船用設備沖擊環境的確定方法及相應的設備抗沖擊設計分析方法。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。Electrorheological ( er ) fluids are a kind of complex fluids that is a suspension of high dielectric constant particles dispersed in an insulating oil of low dielectric constant, which have reversible and adjustable rheological property under the applied electric field
電流變液是一種復雜流體,通常是由高介電常數的固體顆粒分散在低介電常數的絕緣油中形成的懸浮液。在外加電場作用下,其粘度增大,可由液態轉變為類固態,且該過程是瞬時的、可逆的、可調控的。Elastic - plastic analysis for soil around anchor jacked pile in this paper, the course of penetration is regarded as expansion of cylindrical cavity in infinite soil mass. combining with the knowledge of elastic mechanics and plastic mechanics, we can make analysis for soil around pile. finally, we can educe the cylindrical cavity pressure, radius of plastic zone, radical displacement in elastic zone, excess pore water pressure in soil around pile and spherical cavity pressure at the end of pile
錨桿靜壓樁樁周土體的彈塑性分析該部分是文章的主要工作所在,本文把壓樁過程樁周土體的本構關系看作是水平面的平面應變小孔擴張問題,利用小孔擴張原理,結合彈性力學以及塑性力學的知識,對壓樁後土體的性狀作出分析,得出樁對土的擠擴作用力、樁周土體塑性半徑、彈性區的位移,壓樁完成瞬時樁周土體彈性區和塑性區的超孔隙水壓力以及樁端球形孔擴張的擴張力。By investigation of radiating spectrum of matter with transient shock compression, we not only can measure the temperature of matter, but also can know the object equation of matter, and we can know the microstructure of atoms and molecules of matter and their interacting with shock compression
通過對瞬態沖擊壓縮材料輻射譜的研究,可以實現材料瞬態溫度的測量,從實驗上確定材料的物態方程,有助於我們了解沖擊波作用下,材料的原子、分子微觀結構及其變化過程。In vibration test, the signal is always along with noise. if the noise belongs to white noise, fourier transform is very suit to identify and process it, after then remove it. but when there exists low energy impact signal, traditional band pass filter remove noise and the precise position of impact signal is blured
對于白噪聲,由於它是穩定信號,所以也可以使用fourier變換定位,以便在合適的頻段進行提取。但是對于低能量突變瞬態信號,在信噪比比較低的情況下,由於帶通濾波的平滑作用,瞬態信號的位置信息也變得很模糊了。According to practice of transient electromagnetic operators, this paper will introduce a new multi - aperture transient electromagnetic method integrating a lot of simulation experiment data on the base of its primary theory and transmission rule. in the end, result shows this new method can improve so much direction of electromagnetic field that it increases lognitudinal resolving power
本論文根據瞬變電磁法勘探工作者的實踐,利用電磁波運動學特徵在討論其基本原理和電磁波傳播規律的基礎上,結合在論文過程中進行的大量模擬實驗資料,進一步引入了多孔徑瞬變電磁發射場源,實驗結果分析證明採用瞬變電磁多孔徑發射場源改善了輻射場的方向性,提高了瞬變電磁法勘探的垂向分辨力。( 5 ) basing on the exploring of the functions of cohesion force and friction force during rheology course and the assumptin that viscosity lost according viscosic strain, a constitutive model for viscous, elastic and plastic rock is set up, which can simulate the third course of creep. then the impact of transcient damage to rheology is discussed and corresponding creep model for rock is proposed
( 5 )在探導巖石顆粒間粘聚力和顆粒間摩擦力在巖石發生流變過程中的作用基礎上假設粘性失效按流變應變統計概率分佈,建立了巖石粘彈塑性本構關系,能夠描述巖石蠕變加速階段特徵;討論了瞬時損傷對巖石流變的影響和相應的損傷蠕變模型建模問題。According to the electromagnetic induction theory, abrupt variation of current in the transmitter loop will induce magnetic field around it, which is called the first field. in the transmission of the first field, when it meets good conductor target, induce current will be created, which is called erratic current of second current. because the second current changes with time, so it will create new magnetic field, which is called
對于接收部分,由於瞬變信號具有早期信號幅度大、衰減快,而中晚期信號幅度小、衰減慢的大動態范圍的特點,必須設計適應這種大動態范圍信號的採集電路;為了適應野外工作,系統主控部分採用具有功耗低、高速處理的dsp ,通過高速通用串列介面usb與上位機通訊,實現對整個探測系統的控制。The transient electromagnetic thchniques can be used to determine the key region for grouting reconstruction, guiding the drill hole layout and detect the grouting effect
利用瞬變電磁技術探測煤層底板含水層的賦水性特徵,確定工作面內注漿改造重點區域,指導鉆孔布置,並在底板改造后檢驗注漿改造效果。It also inquires its existing questions and researching direction. all of these must improve myself very big in the research and application of transient electromagnetic methods technique in my future
並就其存在問題、研究方向進行了一些探討,對本人今後在瞬變電磁法技術的發展方面將有很大的促進作用。Thirdly, a calculation formula of distortion settlement is established by considering soil structure damage and plastic drain board restraining displacement of soft foundation. starting with discussing the main factors affecting settlement of consolidated foundation, a reasonable method to modify the calculated settlement of soft foundation by layer - wise summation method is presented here. with calculable coefficients of volume deformation, lateral displacement and structure damage to modify the settlement will be closed to measurer settlement
( )在土體損傷理論的基礎上建立了考慮結構損傷、排水板加筋作用的瞬時沉降計算公式,分析了影響土體沉降的主要因素,提出了對按單向分層總和法計算的固結沉降量進行體積應變、側向位移、土體結構損傷三項修正的方法,以上述三個修正系數取代原來單一的綜合經驗系數,使沉降計算值與實測值更接近。The ferrites can be used in ac current and voltage circuit andcommunication circuit, because they absorb the transient energy effectively. furthermore, changing the arrangement of the primary winding coil and the secondarywinding coil and using the double screen for auxiliary current and voitage transformercan be adopted to " induce the common mode transient
指出鐵氧體磁環/磁珠對交流電流/電壓迴路、通信迴路的共模瞬變騷擾有較好的抑制作用。此外通過改變原副方繞組的布置以及採用雙層屏蔽等技術減小輔助變流器/變壓器原、副方繞組的耦合電容也能夠抑制共模瞬變騷擾。分享友人