磁應變 的英文怎麼說
中文拼音 [cíyīngbiàn]
磁應變
英文
magnetic strain energy-
Kelso s. p., henderson b. k. precision controlled actuation and vibration isolation utilizing magnetorheological ( mr ) fluid technology, aiaa 2001
關新春,歐進萍.磁流變減振驅動器的響應時間試驗與分析.地震工程與工程振動, 2002 , 22 ( 6 )The original orientation ( i. e. the mol with respect to the geographical north ) of the core in the formation can be obtained by palaeomagnetic orientation tests. the two results are combined to define the direction of the maximum principle stress of the well or field
該方法根據差應變分析( dsa )實驗確定地應力相對于巖心標志線的方向,利用古地磁方法確定巖心標志線相對于現代地理北極的方位,兩者結合確定地應力方向。Seismic responses of mr structures are analyzed, and three kinds of bang - bang control are compared. 2
研究磁流變阻尼結構的地震反應,對比分析了三種bang - bang控制下的控制結果; 2As a new type of functional material which has been developed in recent years, rare earth - iron giant magnetostrictive materials has many advantages, such as large magnetostriction strain, high coupling coefficient, quick response, high energy density and so on, which make it have good application future in fields of precision driving and microdisplacement based on the new type of functional material, this paper uses new principles and approaches to study this kind of microdisplacement actuator and its precision driving system
稀土鐵系超磁致伸縮材料就是近年來發展起來的?種新型的功能材料,具有磁致伸縮應變大、機磁耦合系數高、響應速度快、能量密度高等優點,已在精密驅動及微位移執行器等領域顯示出良好的應用前景。本論文以這種新型的功能材料為基礎,以基於該類材料的微位移執行器及其精密驅動系統為研究對象,並採用一些新的原理和方法,為新型、高性能微位移執行器及其精密驅動系統的研究提供一個新的途徑與思路。Because the structural interpretation of the 3d model only is of non - uniqueness and uncertainty due to geometric constraint, the finite strain analysis was also applied in the structural interpretation. 184 oriented samples have been drilled at 18 sampling sites in yanjinggou, western sichuan
在川西鹽井溝地區18個采樣點鉆取了184塊定向巖心樣品,通過磁組構的分析結果發現,鹽井溝地區的磁組構基本上都是弱應變的初始變形組構,褶皺前翼應變強度比后翼略強。Experimental techniques for simulating cavity decoupling explosion in laboratory wear developed, which include a center initiating explosive charge designed in shape of mini - spherical with yield equivalent to 0. 125 ~ 8. 00gtnt, circular electromagnetic particle velocity gages and aluminum bar strain gages measurement techniques, spherical divergent stress waves generator. large amount of tamped and cavity explosion experiments had been made in granite, soil, cement mortar and water media environment, respectively
本文建立起了包括中心起爆的0 . 125 8 . 00gtnt微型球形炸藥裝置的研製、圓環形電磁粒子速度計及鋁桿應變計測試技術和球形發散應力波實驗裝置等在內的實驗室微型藥量空腔解耦化爆模擬技術,並在花崗巖、土、水泥砂漿和水等介質中進行了大量的填實和空腔爆炸實驗研究。For solving this problem, there are several ways of measuring the pts of the swr at present, such as demarcating path length, strain and stress, magnetic induction measurement and ultrasonic measurement. however, portable, universal and effective instruments or methods don ’ t appear up to now in china
為了解決這個問題,目前已經有了多種檢測鋼軌溫度應力的方法,比如為標定軌長法、應變法、磁感應測量法和超聲波測量法,但是在我國,便攜、通用有效的檢測儀器或方法還沒有被研製出來。Based on the dynamic analysis of the three - dimensions finite element model of three - gorges ship lift structure, the equivalent reduced mechanical model is established. the comparisons beween the dynamic characteristics and seismic response of these two models demonstrate that the reduced mechanical model can be used in the research on the seismic whipping effect control in the top machinery building of the ship lift structure
本文基於三維有限元模型的動力分析建立了等效的簡化力學模型。兩種模型的動力特性和地震反應表明,升船機頂部廠房地震鞭梢效應的磁流變智能自適應減震控制可以採用本文建立的簡化力學模型模型。Three - gorges ship lift structure is one of important navigation facilities in the three - gorges projects. as far as its scale for navigation, its lifted weight and height are concerned, the ship lift structure is the greatest one in the world. in this paper taking the ship lift structure as background, the principle of mr adaptive reduced vibration control system is proposed to solve the problem of seismic whipping effect of the top machinery building of ship lift structure
三峽大壩升船機是三峽水利樞紐工程中重要的通航設施之一。就其通航規模、提升重量及高度而言,均屬國內外已建、在建升船機之首位。本文以該大型升船機為工程背景,對升船機頂部廠房地震鞭梢效應問題提出了磁流變智能自適應減震控制的原理、設計方法和效果分析。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。( 3 ) the saturation shear stresses vary as the relative permeability of the matrix fluids, the volume fraction of particles, and the square of the particles " saturation magnetization
磁流變液的飽和剪切屈服應力隨基液磁導率、磁性固體粒子濃度呈線性正比關系,隨磁性固體粒子的飽和磁化強度呈平方正比關系。( 2 ) the shear stresses vary as the relative permeability of the matrix fluids, the volume fraction of particles, and the square of the particles " magnetization. the shear stresses increase with the external magnetic field, but have saturation values
磁流變液的剪切應力隨基液磁導率、磁性固體粒子濃度呈線性正比關系,隨磁性固體粒子的磁化強度呈平方正比關系,隨著外加磁場的增大而迅速增大。In short, the method is convenient, economic and reliable and the result applied in the oil fields seems reasonable
綜上,差應變分析和古地磁結合確定地應力方向是一種簡單、經濟、可靠的方法。Ultrasonic assisted mrf is a flexible polishing process in which the polishing spot can be controlled, and there is no subsurface destroyed layer on polished surface, so it is satisfy the demands of optical facilities which are used in aviation, aerospace and national defense
磁流變拋光為拋光區域可控的柔性拋光,在拋光表面不會產生亞表面破壞層,能很好的滿足航空、航天、國防等領域光學器件的加工要求,有廣闊的應用前景。In view of the progress of mr techniques and automotive suspension techniques, some mr damping techniques for automotive suspension systems, including system theory, experimental investigation, design method, manufacture technique, and models of the dampers, etc. have been presented in this dissertation in order to progress the mr fluids and automotive suspension techniques based on mr damper
本文根據磁流變技術的研究現狀和汽車懸架技術的發展趨勢,系統研究了汽車磁流變阻尼技術,包括:磁流變效應、阻尼器系統理論、設計方法、實驗研究和阻尼器的動力學模型,旨在推進磁流變體和磁流變阻尼器在汽車工程中的應用研究。Based on the transient response, the control effectiveness of the visco - elastic dampers is further demonstrated. according to the lqr optimal control theory, clipped - optimal control arithmetic, and the modified bouc - wen model of the mr dampers, the lqr - clipped semi - active control is proposed. the passive, active, and semi - active control of the cables are analyzed by using the difference discretization model of the cable - dampers system
結合lqr最優控制理論、面向速度剪切( clipped - optimal )控制演算法及修正的磁流變( nr )阻尼器bouc - wen模型,創新地提出了lqr - clipped半主動控制演算法,應用拉索振動的差分離散模型,對斜拉索的面內振動進行了被動、主動及半主動控制研究,分析了mr阻尼器對斜拉索的振動控制效果。The stability, rheology, chain structure and consecutive medium model in magnetorheological fluids are analyzed. according to the contribution of shear stress and normal pressure in polishing zone, the quantificational machining model of mrp is presented. as an example of plane workpiece, the influences of machining parameters on removal rate and surface roughness in mrp are studied
5 、磁流變拋光( mrf )是超光滑光學表面的一種新型加工技術,本文從mrf的磁、力學性質出發,研究了磁流液的穩定性、流變效應、鏈化結構和連續介質模型;根據拋光區內剪應力、正壓力的分佈特徵,提出了mrf的定量加工模型;然後以平面工件的磁流變拋光為例,揭示了工藝參數對材料去除率和表面粗糙度的影響規律。Magneto - rheological ( mr ) fluid dampers have recently emerged as enabling technology for implementing semi - active control in a variety of application because of their mechanical simplicity, low operating power requirements, environmental robustness, and demonstrated potential for developing forces sufficient for applications
實踐證明,磁流變阻尼器具有結構簡單、消耗功率小、抗污染和輸出力大等優點,有可能在實際的半主動控制中得到應用。The main contributions of the dissertation are as follows : on the basis of experimental results, the operational effects, such as the magnitude of magnetic field, the temperature and the rate of shear strain, on the shear stress of the mr fluid are shown and models of the quasi - bingham model and a nonlinear model for the shear stress of the mr fluid also are developed, in which the characteristic of " shear - thin " of the mr fluid is described
論文的主要貢獻如下:通過測試磁流變液剪切應力與磁感強度、剪切應變速率、溫度的變化規律,建立了能反映磁流變液剪切變稀現象的剪切應力與剪切應變速率的磁流變液模型。根據磁流變液模型,從理論上建立了能在較寬的電壓內范圍比較準確地預報磁流變阻尼器輸出力的近似公式。The total energy expression of the sample is build through analyzing its energy composition. according to the principle of the minimum energy, using the connection between stress and strain and the connection between magnetostriction and magnetism strain, an expression for the mean field parameter is derived
通過分析所研究試樣的能量組成,寫出了試樣總能量表達式;根據能量最小原理,利用應力、應變之間的關系和磁致伸縮系數、磁應變之間的關系,得到了分子場參數表達式。分享友人