尼特效應 的英文怎麼說
中文拼音 [nítèxiàoyīng]
尼特效應
英文
nuclear excitation by electron transition- 尼 : 名詞(尼姑) buddhist nun
- 特 : Ⅰ形容詞(特殊; 超出一般) particular; special; exceptional; unusual Ⅱ副詞1 (特別) especially; v...
- 效 : Ⅰ名詞(效果; 功用) effect; efficiency; result Ⅱ動詞1 (仿效) imitate; follow the example of 2 ...
- 應 : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
- 效應 : [物理學] effect; action; influence
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In comparison with impact force dominated conventional pulverizing equipment, pan - mill is especially effective for the pulverization of polymer materials. experimental results show that not only commodity polymers such as polystyrene and polypropylene but also coriaceous engineerin g plastics such as pa6 can be effectively pulverized by pan - mill
磨盤形力化學反應器對聚合物材料的粉碎具有獨特的優勢,研究結果表明,常溫操作條件下,磨盤形力化學反應器不但可以有效粉碎通用聚合物材料,如聚丙烯,也可以粉碎強韌性工程塑料尼龍6 。And as if all that were not enough, sir nicholas stern ' s big report on climate change, published by the british government in october, has forced greenhouse gasbags to master another bit of esoterica : the greek alphabet
如果所有這些都還不夠的話,英國政府10月份發布的,由尼克拉斯?斯特恩爵士撰寫的,關于氣候變化的鴻篇論著,迫使那些對溫室效應「喋喋不休」的人,又掌握了一點秘學:希臘字母。Magnetic hysteresis is the intrinsic characteristic of mr dampers, which will have more serious effect on the performance of mr dampers
本文對mr阻尼器的固有特性磁滯效應對控制效果的影響進行了研究。Based on the special property of magnetic fluid ( mf ), we fill the magnetic fluid into the working clearances of the servo valve torque motor. one side, the magnetized magnetic fluid can exert a damping torque on the torque motor armature and reduce vibration of the armature ; on the other side, it can improve the magnetic circuit efficiency of the torque motor because of the magnetic fluid ’ s larger magnetic permeability
基於磁流體所具有的特殊性質,將磁流體添加到伺服閥力矩馬達的工作間隙中,一方面磁流體被磁化后可增大銜鐵的阻尼力,減少振動;另一方面由於力矩馬達氣隙中磁導率的提高,使氣隙中的磁通量增大,力矩馬達的磁路效率和輸出扭矩將增大,因此可以提高力矩馬達的固有頻率和伺服閥的響應速度。Fist ly, use mass equivalent method to predigest the original rotor system. secondly, use transfer matrix arithmetic to have finished the relative program to calculate the critical speed of flexible multi - tray rotor bearing system by matlab language. thirdly. finish program the unbalance response using riccati - transfer matrix arithmetic and finity buck arithmetic. fourthly, answer to the high vibration of uncontroled system when cross the critical speed, come out to adopt changing clearance damper bearing to control the viberation
本文對多柔盤轉子-支承系統的振動現象做了以下初步探索:用質量離散化方法把原轉子系統簡化;採用matlab語言編制了對傳遞矩陣法計算多柔盤轉子-支承系統的臨界轉速;用matlab語言對riccati傳遞矩陣法和有限元法編制了程序計算系統的不平衡響應;並針對其過臨界轉速時振動較大的現象,提出採用變間隙控制油膜剛度和阻尼,從而使原系統的在特定轉速(臨界轉速)的一段范圍內不平衡響應減小;並從被動控制與主動控制兩方面進行數值模擬,取的了較好的控制效果。So choose parameter of damping device with reduce energy storage to improve cvt become and respond effective way of characteristic wink rational, this increases the capacity of sending for raising the dynamic stability of the supervoltage power transmission and transformation system, guarantee power system safe and reliable to run and have important technology economic meanings
因此,合理地選擇阻尼器的參數以降低儲能是改善cvt瞬變響應特性的有效途徑,這對于提高超高壓輸變電系統的動態穩定性,增大輸送容量,保證電力系統安全可靠運行具有重要的技術經濟意義。Analysis software. the analysis show : the gyroscope effect to the flywheel rotor ' s and the shaft ' s vibration character under high rotate speed should be considered. at this time, the system ' s normal frequency is the function of rotate speed ; the amplitude passing through the resonance field can be lowered obviously by improving the effective damping of the electro - magnetic bearing
建立了高速旋轉狀態下,採用磁軸承作支撐的飛輪轉子和轉軸的動力學模型,給出了有限元法在此問題中的具體應用,並利用i - deas有限元分析軟體具體分析了飛輪系統的共振頻率、系統振型,以及對偏心激勵的響應,分析表明:對于高速旋轉的飛輪轉子和轉軸,應考慮陀螺效應對其動力學特性的影響,此時系統的固有頻率是轉速的函數;通過提高磁軸承的等效阻尼可顯著降低系統通過共振區域時的振幅。Three propositions are proposed based the vector base network. cognition of human being and vector base cognition model are compared, the corresponding connection is created. 7 ) the application for rubber mixing process is given : abnormal modeling samples first removed, svm is applied to build the discharge model to establish the rubber discharge condition, and long term practical production validated the discharge modeling method ; adopting dynamic rkrls and rsvm, mooney time serials is used to model and predict, which shows better prediction ability than rls ; using v
7 )將本文演算法在橡膠工業的密煉過程得到實際的應用:在排除異常樣本點的情況下,利用5vm的工業特性,進行排膠點的建模,獲得好的應用效果:利用動態的rkrls和rsvm演算法,通過對橡膠棍煉質量的門尼指標進行建模和預測分析,表明演算法具有較好的跟蹤預測性能;利用矢量基學習網路對密煉過程的門尼進行辨識建模和預報,獲得了較好的效果,從而實現了更好的門尼波動的控制。In the forth chapter, the performances of mr dampers designed and fabricated at chongqing university have been tested in national center for test and supervision of coach quality, including schematics of damping force vs. displacement of piston head, damping force vs. velocity of piston head, etc. for some given electric currents of the coil. the experimental results demonstrate that damping force offered by mr damper consists of background damping generated by resistance of mr fluid and damping caused by magnetic field
對不同勵磁電流條件下的理論阻尼力與測試阻尼力進行了比較,分析了產生誤差的主要原因;對阻尼器產生溫度效應產生的主要原因進行了分析,提出了應該提高磁流變體的溫度穩定性;推導了磁流變體的感性和容性流動方程,從理論上分析了磁流變體的感性和容性對阻尼器特性的影響。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。By means of the theoretical analysis of the micromachined vibratory rate gyroscope, we get following conclusions : the microgyroscope can be driven by tangent electrostatic force produced by fence structure electrodes, and the normal electrostatic force can be neglected for the influence of the device property ; the parasitical capacitance and fringing effect can ’ t be neglected for the calculating of the detection capacitance ; the coefficient of damping force is comparatively little when the air damping in the driving mode and the sensing mode of the device is the couette flow damping
主要內容如下: 1 .分析了微機械陀螺的運動特性、靜電驅動特性和在大氣下的阻尼特性,分析結果表明,可以運用切向靜電力驅動質量塊振動,法向靜電力對器件特性的影響可以忽略;在計算微結構電容時,電容的邊緣效應和寄生電容不可忽略;在器件所受阻尼主要為庫埃特流阻尼的情況下,阻尼力系數較小。Considering the nonlinear characteristic of dampers, computing simulation and analysis of the seismic response for high efficient damper suitable for muti - structure system ( hedms ) and system parameters " influence on control effect have been done
考慮阻尼器的非線性滯回特性,對兩結構高效被動阻尼控制體系( hedms )的地震反應及體系參數對控制效果的影響進行了模擬分析。None but is the test spectrum abundant and controllable, it is possible to simulate the stresses environment needed for exposing weakness of the product. based on summarizing the present status of the vibration test and vibration environment simulation technology in the world, the topic of simulation of super - gaussian random vibration environment with controllable frequency spectrum and its applications in reliability enhancement testing is put forward. the main content and conclusions of the dissertation are as following : 1
本文在綜述國內外振動試驗技術和振動環境模擬技術的基礎上,引出「頻譜可控的超高斯隨機振動環境模擬技術及其在可靠性強化試驗中的應用」這一主題,並緊緊圍繞該主題開展了如下研究工作: 1 .全面分析了振動激勵的功率譜密度量級、幅值分佈、帶寬以及試件結構的固有頻率、阻尼比等因素對疲勞損傷累積的強化效應,提出振動強化試驗激勵信號應具備的重要特性:頻譜可控和超高斯,確立了本文的研究主題和方向。The rotor model used in the present study is a rigid - blade flap - lag model. analytical tools are developed for combined rotor - damper steady state response, stability and transient ( time domain ) response and damper loads
由於粘彈減擺器減擺器幅變、頻變特性,迫切需要一種基於瞬態響應分析的,能快速有效的阻尼識別技術。The mechanic character, destroying pattern, the ductile and dissipation energy capacity of this composite structure under the earthquake have been clarified. the stiffness degradation, natural frequency, damping ratio of this structural system with the development of intensity of earthquake have also been investigated. with consideration of the top displacement, drift of story and micro - strain of longitude steel bars, the equivalent shell wall method has been presented in order to simplify the design of such type structure
通過試驗,掌握了該結構體系在水平地震荷載作用下的受力特點、變形與耗能性能、結構的破壞形態等力學指標:得到了結構在不同地震烈度條件下的剛度變化、自振頻率、阻尼比等動力特性;綜合結構的頂點位移、層間轉角以及鋼筋的微應變,提出了適合於該結構體系簡化設計的「等效剪力墻法」 。Fresh up from the championship, they simply could not cope with the variety, pace and skill liverpool possessed - or indeed the pots of money that has seen manager rafael benitez build his squad
作為超級聯賽的升班馬,他們幾乎無法應對形式多樣,沉著冷靜和技術高超的利物浦瘋狂進攻,或者說,主教練拉法?貝尼特斯建設班底砸的錢確實收到了成效!The framework and results of this study is thus summarized as follows : 1. analyzing the effect of the nonlinear parameters on seismic response. so far the g / g _ max - ( transient dynamical shear modulus over the maximum shear modulus vs. shear strain ) and the - ( equivalent shear hysteretic damping ration vs. shear strain ) curves are widely employed in the experimental method in studying soil dynamic property, supposing under equiamplitude cyclic load
目前,人們利用實驗手段分析土體動力特性時給出的最基本的描述量是g g _ ( max ) ?曲線(等效動剪切模量與最大動剪切模量的比值隨應變幅值變化的曲線)及?曲線(等效剪切滯回阻尼比值隨應變幅值變化的曲線) 。Research on structural vibration control contains vibration mitigation using tuned liquid damper and mr damper, respectively. the sloshing characteristics of tld are investigated using shallow water wave theory and the effectiveness and feasibility of the tld on platform vibration suppression are investigated
利用淺水波動理論研究了調諧液體阻尼器內液體的振蕩特性,並就調諧液體阻尼器應用於海洋平臺振動控制的有效性和可行性進行了數值模擬研究。Considering the randomness of physics parameters of structural material, geometric dimensions, damping, loads and closed loop control voltage respectively or simultaneously, the analytic model of the stochastic structure under random forces are built. the solving methods are proposed. the computational expressions of the numerical characteristic of the structural dynamic response are developed
2 、考慮壓電智能桁架結構物理參數、幾何參數、結構阻尼和外荷載、閉環系統控制電壓分別或同時為隨機變量,構建了結構在隨機力作用下的動力響應分析模型,提出了求解方法,推導出結構動力響應隨機變量的數字特徵計算表達式,通過算例驗證了所建模型和所提求解方法的正確性和有效性。The last part concludes that mr dampers is one of the very attractive control elements in semi - active control. as one of mixed model mr dampers, armature piston ' s mr dampers have principle designs good function and better practical value, it ' s worth to popularize use. about the armature piston ' s mr damper ' s designs, the space of work, the diameter of wok and the length of magnetic pole have obvious affects to the force of mr dampers, mr fluid materials should be paid attention, input electric current affects mr dampers greatly the high current increases the damping force, the effect of reduce vibration increase obviously,
最後,論文給出了結倫:磁流變液阻尼器是半主動控制裝置中非常吸引人的控制元件之一,混合工作模式的磁流變阻尼器結構簡單,阻尼效果比流動模式和剪切模式均要好,是一種比較理想的磁流變阻尼器;電樞活塞式磁流變阻尼器作為混合模式磁流變阻尼器的一種結構形式,其結構設計合理,性能良好,具有較強的實用價值,值得在工程中推廣應用;在電樞活塞式磁流變阻尼器的設計中,應特別注意工作間隙h 、工作直徑d 、磁極長度卜都對阻尼器的阻尼力有明顯的影響,並注意選用合適的磁流變液材料;輸入電流對磁流變阻尼器的阻尼效果影響很大,輸入大電流時阻尼力明顯增大,減振效果明顯提高。分享友人