熱響應元件 的英文怎麼說
中文拼音 [rèxiǎngyīngyuánjiàn]
熱響應元件
英文
heat responsive element-
Secondly, based on the syntony frequency and the elasticity mechanics and other correlative professional knowledge, establishes a suit of fsm vibration module system, selects the structure, material and the process and treatment technique of the elastic element in the elastic system of the mirror, analyzes a lot of factors which affect the structure of the rapid controlling reflector and provides the derivation formula
以諧振頻率為出發點,利用彈性力學等相關專業知識,建立一套fsm的振動模塊系統;確立了反射鏡彈性系統中彈性元件的結構、材料的選擇,及加工,熱處理。分析了影響快速控制反射鏡結構的諸多因素,給出其相關推導公式,最後應用solidedge和cosmos軟體對該結構進行了計算機模擬。It shows that the injection quantity and the difference of temperature distribute as a parabola which is at the same load, and the minimum of the parabola corresponds to the optimum quantity of injection ( g ). under the condition that the quantity of injected mass, the air speed and the heat quantity is respectively g, v and q, the research demonstrates that the pentium iv chip ' s temperature variation can be controlled under 40c and work normally when the wind speed overpass 1. 5m / s and the power dissipation of the chip is 60w. otherwise this paper calculates the flooding limit of thermosiphon with several different methods
對其充灌量、散熱量、電子元件( cpu模擬晶元)表面與環境溫度之差及通風、流速的影響進行了系統的測試,發現充液量與溫差的關系在負荷不變時呈拋物線分佈,其極小值點對應的充液量是最佳充液量g 。在充液量為g時,對風速v 、散熱量q進行的研究表明,當風速超過1 . 5m / s后,奔騰晶元在60w發熱條件下晶元溫度小於40 ,能滿足長期正常工作。The experimental results showed that the substrate of pyroelectric sensor could significantly affect the detectivity. the porous silicon dioxide and pet plastic film substrate could effectively decrease the thermal conduction and the thermal fluctuation noise of the pyroelectric element, increase the voltage responsivity and the detectivity obviously
結果表明,多孔氧化硅和pet塑料可有效降低熱釋電元件的對外熱傳導,明顯提高傳感器的電壓響應率和降低熱釋電元件的熱噪聲。Smart materials and structure have definite requirements of sensor components and driving components, for example, they can adhere well to the matrix and have higher strength, fatigue strength, more broad scope of frequency response and faster response speed, etc. piezodielectric ceramics have characteristic of easily preparing, heat - resistance, wet - resistance, high strength and broad scope of frequency response, etc. furthermore, it has piezoelectric effect and inverse piezoelectric effect, namely it can produce electric potential energy when it is transformed by mechanical strength and its mechanical dimension can be transformed when voltage is put on it
壓電陶瓷能與基體材料很好結合,具有制備容易、耐熱、耐濕、強度高、頻響寬等特點,另外它具有正壓電效應和逆壓電效應,即當它受到機械力變形時,能產生電勢,對它施加電壓時,能改變其機械尺寸,因此它在智能材料結構中既能用作傳感元件又能用作驅動元件。The paper analyzes and discusses the law that the result precision of thermal stress is affected by the proportionments of element border length, border condition, form function and so on, and compares the method with displacement finite element method being used
分析、討論單元邊長比、邊界條件以及插值函數形式等對熱應力結果精度的影響規律,並與現有的位移有限元方法進行比較、分析、評述。During the temperature fields, the results indicate that the processing parameters such as the extrusion velocity, casting temperature, perform preheating temperature, die preheating temperature and so on are important for the temperature fields besides the dwell time. they are must be in concordance each other to the deforming zone is in the quasi - solid state, and the stable semi - solid extrusion is implemented. during the deforming fields, the hyperbolic sine thermo - rigid - viscoplastic fem model is selected according to the forming feature of the process, and the variations of the stress - strain fields are studied
在溫度場的模擬中,模擬結果表明,保壓時間是影響製件成形質量的關鍵因素之一,擠壓速度、液態金屬澆注溫度、預制體預熱溫度和模具預熱溫度等工藝參數對溫度場的影響也很大,需進行參數之間的協調,只有當變形區內部始終維持準固態時,才能實現穩定的液-固擠壓成形過程;在變形場的模擬中,根據液態浸滲擠壓的成形特徵,選用了雙曲正弦剛-粘塑性有限元計算模型,研究了變形過程中應力應變場的變化規律,研究了模角對變形和金屬流動的影響及變形力的變化過程和其影響因素。The alkali & alkaline metal oxide will react with sic at about 1300c and generate silicate, which calls alkali - chemical corrosion, and can influence the glowing of element
在1300c左右,堿和堿性金屬氧化物與碳化硅發生反應,生成硅酸鹽,稱為堿化學侵蝕,會明顯影響元件發熱的紅熱程度。Based on the theories of gear engagement, contact analysis, friction and heat transfer, a three - dimensional finite element model of gear tooth was established to investigate temperature distributions and variations along the contact path over a range of applied loads and operating speeds with consideration of lubrication conditions. sensitivity analysis of surface temperature to gear configuration, frictional heat flux, heat transfer coefficients, and oil and ambient temperature was conducted and the major parameters influencing surface temperature were evaluated
本文基於齒輪嚙合原理、輪齒接觸分析、摩擦學和傳熱學,以有限元分析方法和理論分析計算相結合為手段並以實驗測量結果作為參考,建立了適用於工業應用並具有較高計算精度的高速齒輪傳動輪齒溫度分析的模型和方法,系統地分析了輪齒本體溫度的大小和分佈以及齒輪幾何、載荷及轉速和潤滑冷卻條件等對輪齒本體溫度的影響。This paper mainly described the research on rheological property, high thermal stability, flame retardant, the influence of catalyst and insulating heat conduction of organic silicon encapsulating materials, which greatly apply on electronic equipment and large scale integrated circuit and so forth
摘要本文主要綜述了國內外用於電子元器件、大規模集成電路等高科技領域的有機硅灌封材料在流動、耐高溫、阻燃和絕緣導熱等方面的性能以及催化劑對灌封材料的影響的研究應用進展。Being based on actual multi - chips module packaging structure a three dimensional thermal analysis model is built, thermal analysis on multi - chips module is conducted using diamond substrate and thermal interfacial materials ; a two dimensional and three dimensional chip - adhesive ? substrate thermal stress model are built, and interfacial thermal stress distributions are computed based on different area ratios and thickness ratios of substrate to chip
本文根據實際的多晶元組件的封裝結構,建立了三維溫度場分析模型,分析了金剛石作為導熱層和基板對多晶元組件散熱性能的改善;建立了二維和三維的晶元-粘結層-基板熱力學模型,分析了不同的基板/晶元厚度比和面積比對層間熱應力分佈的影響。According to step - response experiment, math model of the hotplate was set up and the temperature of controlling system including temperature detection circuit, pd controller, voltage pulse - wide transforming circuit and executor was designed
以階躍響應實驗為基礎,初步建立起控制系統的數學模型,設計了適用於該電熱板的閉環溫度控制系統。系統主要包括溫度檢測電路、 pd控制器、電壓-脈寬變換電路及執行元件。That is, by the calculation of the anti - thermal deformation quality factor and synthetic quality factor of some typical primary mirror materials, the primary mirror material is selected scientifically and rationally. by the finite element method and the conception of structure rigidity quality factor, researching the relation between the light - weighted cell shape, the mirror thickness and mirror structural rigidity quality. by the force - thermal coupling analysis of the primary mirror assembly, the relations between the thickness, height of the flexible support reed and primary mirror synthesis surface figure error ( p - v ) have been researched
即,通過對常用主鏡材料的抗熱變形品質因數和綜合品質因數的定量分析,科學地完成了主鏡的選材;應用有限元分析方法,藉助于結構剛性品質因數的概念,研究了主鏡輕量化孔的形狀和主鏡厚度對鏡結構剛性品質的影響;通過對主鏡組件的力熱耦合分析,研究了主鏡柔性支撐簧片厚度與高度對主鏡面形的影響。The analysis starts from the introduction of the theory of exchange rates and the relevant economic factors that affect exchange rates. the analysis is based on the following theories : the theory of macro - stabilization policy in open economy, the mundell - fleming model, originated by professor robert a mundell of the department of economics columbia university, who also founded the theory of the optimum currency areas ; another theory is the trilemma by paul krugman. it is concluded that the current stable exchange regime serves as an important guarantee for the fast economic development in china
面對「人民幣是否應該升值」這個國內外經濟界討論的熱點,本文從匯率決定理論及影響匯率制度的相關經濟因素出發,引用了最優貨幣區域理論的首創者、美國哥倫比亞大學經濟系教授羅伯特? a ?蒙代爾的開放條件下宏觀穩定政策的理論「蒙代爾?弗萊明模型」以及克魯格曼的「三元悖論」等理論來探討人民幣匯率制度的選擇及未來匯率體制的發展目標和前景,明確了目前穩定的人民幣匯率體制是促進我國經濟高速發展的重要保證。The relationship of true stress and true strain for the mid - strength weldable 1420 aluminum - lithium alloy has been investigated in this thesis by high temperature compression testing and high temperature tensile testing on different hot deformation conditions. the interdependence of flow stress, strain rate, strain and deformation temperature for the alloy at high temperature has been studied
本文通過高溫壓縮和高溫拉伸試驗,研究了中強可焊1420鋁鋰合金熱變形時不同變形條件下的應力-應變關系、變形條件對合金流變應力的影響;運用多元回歸分析方法,採用c語言編程確定了合金的本構關系方程;引入z參數,求解了部分材料常數,並用於材料的組織性能研究中。The paper applies ansys finite program to analyse coalstore - shale fired perforated brick ' s hole shape, and finds the factors that influence the strength of bricks. the author attempts to explore from the basic principle of heat transfer the effect of the changes of hole arrangements and hole ratios of the perforated ( hollow ) brick in certain dimensions on the thermal transition of the brick, and to improve the thermal insulation property of the brick on this basis
通過ansys有限元應用軟體對不同孔型、不同孔排列的多孔磚進行力學性能分析,找出影響多孔磚力學性能的因素;探討了在一定尺寸條件下,多孔磚、空心磚的孔洞排列與孔洞率的變化對磚體傳熱性能的影響,以此改善磚體的抗壓強度和隔熱保溫性能。In this paper, on the basis of analysis about temperature increment, stress, deformation of optical components and phaseshifts, the influences of beam quality are studied theoretically and experimentally
本文分析了光學元件的溫升、應力和變形及其引起的附加相移,從理論計算和實驗兩個方面研究了熱效應對光束質量的影響。Firstly, the analyses on the dynamical response of the tsing ma bridge ( tmb ) under traffic loading are performed on the basis of the three dimensional finite element model of the full - scale structure of the bridge, and some regions critical to fatigue damage are determined from the result of the dynamical response. the hot spot stress approach is usually adopted in the fatigue design and analysis of tubular welded joints. to apply the hot spot stress approach for the fatigue evaluation of long - span suspension bridges, the fem is further used to determine the hot spot stress of the critical fatigue locations
首先,在青馬大橋三維有限元模型和整體動力響應分析計算的基礎上進一步進行關鍵疲勞構件的局部熱點應力分析,對疲勞危險部位處的焊接構件建立三維有限元模型,施加符合橋梁實際工況的載荷與位移邊界條件,進行局部熱點應力分析,確定這些焊接構件內的名義應力和相鄰焊接區域內熱點應力之間的關系,得到相應的應力集中系數。Traditional micro - displacement actuator always uses heat - expanded materials and piezoelectric ceramic. and these materials universally have many disadvantages, such as small expanding - contracting value, long reaction time, complex driving structure, easily aging and so on, which seriously influence output range and controlled precision
傳統的微位移驅動器的驅動材料多採用熱膨脹元件和壓電陶瓷,由於在這類材料中普遍存在伸縮應變量小、反應時間長、驅動結構復雜、易老化等問題,嚴重影響了驅動器工作范圍的擴大和控制精度的提高。The break was assumed to be a single tube double - ended and three - tube double - ended shear break. the diameter of the break orifice is 0. 876mm and 1. 518mm respectively. the characteristic responses of main thermal - hydraulic parameters, such as primary pressure, secondary pressure, break flow rate, pressurizer level, secondary side level of steam generator and so on, were presented in this thesis
試驗再現了核電廠蒸汽發生器單根傳熱管雙端斷裂事故和三根傳熱管雙端斷裂事故發生后的熱工水力現象,給出了事故過程中一次系統壓力、二次系統壓力、破口流量、蒸汽發生器二次側水位、穩壓器水位、元件表面溫度等主要參數的瞬態響應。In order to study the regeneration mechanism of dpf in detail, we still need a mathematical model of the channel unit, which present temperature field and the soot reaction rate of the channel. finally, it points out the influences of various factors to the regeneration process by computing the numerical solution of model under different boundary conditions and geometry parameters, such as the initial temperature, the gas flow rate, the oxygen concentration, the sediment quantity and the wall thickness of the filters, and so on. in this way, the paper provides theoretical guidance for optimization design of the dpf
首先研究了干凈壁流式過濾體的加熱特性,然後在加熱和燃燒理論的基礎上建立了微粒捕集器再生過程的數學模型,並對模型進行了數值計算,得到了捕集器內部的三維溫度場分佈以及溫度梯度分佈,結果與實驗值吻合較好,驗證了模型的正確性;為了詳細的研究微粒捕集器的再生機理,建立了孔道單元數學模型,得到了孔道內的溫度場分佈和微粒反應速率分佈;最後,通過求解模型在不同邊界條件和不同幾何參數下的數值解,分析了各種因素對再生過程的影響,如過濾體初始溫度、過濾體內氣流的流動速率、氧濃度、微粒沉積量以及過濾體壁面厚度,為微粒捕集器的優化設計提供理論指導。分享友人