有限變化 的英文怎麼說
中文拼音 [yǒuxiànbiànhuà]
有限變化
英文
finite changes-
Fist of all, on the basis of the research of agone boffins, this author investigates the interaction mechanism of bolts and rock, and introduces the elastic ? lastic analytical resolution which is consist of the liner structure, the equivalent reinforced wall rock and the original wall rock in the simple loading from the equivalent well - proportioned view ; this solution is very important meaning for the engineering design. on the basis of coulomb friction model, the author introduces the finite element equation of the contact problem in order to provide the academic foundation for the application of msc. marc. finally, combining the engineering practice of the non - linear analysis of shield tunnel through yellow river of the south - north water transfer and using the model of friction, the author researched the evolution law of stress and displacement field in the structure of grouted rock bolts, and analyzed the effect to the stress and deformation of surrounding rock mass due to anchor supports
首先，在前人研究成果的基礎上，對錨桿與圍巖的相互作用機理進行研究，利用全長錨固錨桿的中性點理論，從等效均化的角度來考慮錨桿對圍巖的加固作用，並推導了在簡單荷載作用下，含有襯砌、等效加固后的圍巖、原始圍巖三者的彈塑性解析解，對工程設計有著重要的參考意義；在數值模擬方面，以考慮錨固圍巖滿足規則化庫侖摩擦模型為基礎，利用虛功原理推導了接觸問題的有限元方程的計算格式，為開發運用大型商用有限元軟體msc . marc提供了理論根據，也形成了本文的理論基礎：最後，論文以南水北調東線穿黃隧洞穩定性分析項目為工程實例，利用本文所述的接觸問題的摩擦模型理論，對錨桿支護結構的應力場、位移場的變化規律進行了研究，分析了加錨支護對隧洞圍巖應力、變形的影響。Perfect pre - processing and post - processing function is one of the main factors to evaluate the vitality and market value of the finite element analysis system surveying today development of finite element analysis technology, most of which concentrate on establishing fine user interface, also has some limitation on application, and especially, the research on the visualization of arbitrary cut - plane is always in ascendants to realize the visual processing on cut - plane needs reprocessing the results of finite element analysis which have get, so the algorithm is two parts : seeking the physical value of cut - plane and drawing 2d contours, the former, based on the theory of stress on " arbitrary inclined plane " in physical mechanics, use the method of linear interpolation method to get the coordination and physical value of intersection between cut - plane and element arris ; the latter, based on the tables on elements, nodes, stress and strain, summarize a rapid algorithm of generating 2d contours based on the grid. this thesis synthesizes there two parts and get a visual processing program under fortran
縱觀有限元分析技術的發展，目前大多集中在建立良好的用戶界面上的研究仍存在許多應用上的局限性，其中對任意剖面上可視化的研究仍處于方興未艾的階段。要實現任意剖面上可視化處理，必須先將得到的有限元計算結果進行再處理，因此在演算法上分為兩部分：求任意剖面上物理量值的演算法及二維等值線演算法。前一部分以彈性力學中「任意斜截面的應力」為理論基礎，利用線性插值方法得到截面與單元棱邊的交點坐標及交點物理量值；在此基礎上；根據已得到的單元及節點序號表、應力應變物理量表，總結出一種基於有限元剖分網格的快速生成二維等值線的演算法。In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後，對巖土工程領域至今尚未解決，甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討，提出了考慮地基變形的地基承載力上程計算方法；對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎（空間問題）的承載力界限荷載p _ （ 1 / 4 ） ，並與國內外土力學專著及地基基礎設計規范中的條形基礎（平面問題）的界限荷載p _ （ 1 / 4 ） ，進行了對比，從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況；根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作，本文以截頭錐模型模擬地基，對地基（巖基）承載力的動測法進行了研究，為各類地基（包括巖基） ，匯總了動力分析和檢測川的參數：針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題，從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論；本文作者根據多年現場載荷試驗的工程實踐，對深井荷試驗裝置的核心部分? ?反力裝置，設計了側壁支撐反力加載系統，該加載系統具有實用、簡便、穩定及安個等優點。In allusion to diversified methods ' s shortcomings of solving girder ' s distortion, brings forward applying cantalever and finite progession method to analyze all girder ' s distortion, namely through frame analysis translates memory into analysis ; and use especial but simply method to solve common but complex problem, and expounds it through examples
摘要針對求解梁變形的幾種方法的不足，提出用懸臂梁及有限級數法分析所有梁的變形，即通過懸臂梁結構分析，將記憶轉化為分析，用特殊而簡單的方法求解一般而復雜的問題。At the same time, i discover that the number of the return air inlet has a little influecing and it can be neglected. when there is hot resource at upperside of the room, the hot jet and supply air jet together affecting. at the same lower part heat intensity, a utmost wind speed exist, the supply air speed lower, the more heat intensity on the upside, the less convecting transfer heat, whereas
對于上部有熱源的條件下，則其對流熱轉移量的變化關系是由熱射流與送風冷射流共同作用影響的，在下部熱源強度相同的條件下，存在一極限風速，在該風速以下，上部熱源強度越大，則對流熱轉移量越小，反之在該風速以上，上部熱源強度越大，則對流熱移量越大。On this foundation the article inducts in detail the method which is based on the relative settlement of calculating unit area end support ( qb ) force at the same time considering the feature of pedestal pile ' s " arch effect " the article introduces conception of pile effective length and finally obtain t he formula of calculating man - made pipe with bulb - shaped axial carrying capacity. the article uses marc program to calculate and analyze foundation soil ' s stress and displacement and gets the change curve chart and the proportion that is shared by king - pipe side soil friction resistance and pipe end counterforce respectively. the article inducts the structure of pedestal in detail on the basis of generalizing pedestal application cases of many countries
在此基礎上論文詳細歸納了以相對沉降為依據確定單位面積端承力q _ b的計算方法，並考慮擴底樁的「拱效應」特點引入了有效樁長的概念，最後結合公路規范推出了比較實用的人工挖孔擴底樁軸向承載力計算公式。論文運用了marc程序對地基土的應力和位移進行了有限元數值計算分析，得到了地基土的應力和位移場的變化曲線和在加載過程中樁側土摩阻力和樁端反力各自所承擔的比例；本文還在總結各國挖孔擴底樁應用情況的基礎上就擴底樁的構造進行了詳細的歸納。Ruian jinxing automobile unit co., ltd. is share responsibility limited company which specializes in the special - purpose spare part of production domesticization of the car, motorcycle engine and derailleur, there are more than 100 staff now, among them more than 20 of the engineer, technological administrative staff of the above title
瑞安市金星汽車零部件有限公司是專業生產轎車摩托車發動機和變速器國產化專用零部件的股份責任有限公司，現有員工100餘人，其中工程師以上職稱的技術管理人員二十余名。On the basis of the others, according to the constructional feature of the constitution of the composed soil nails, the computation mode of the he strut frame made of composed soil nails was set up to analyze the distortion of the he strut frame made of composed soil nails when it is stressed. with the engineering data, the strut frame made of composed soil nails is analyzed with the program ababqus, and the effects of the distortion characters, the property of the deposition of the ground, the mechanical property of the soil nails, the variation of the length and the separation of the soil nails, and the diametric of the mixing piles on the strut frame made of composed soil nails, and the distortion property of the strut frame made of composed soil nails under different ground conditions
在總結前人的研究成果下，針對復合土釘墻構造的特點，建立了模擬復合土釘墻受力變形的計算模型，並結合工程實測資料，運用大型通用有限元程序ababqus對復合土釘墻進行了有限元分析，詳細討論了復合土釘支護結構開挖過程中的變形特性、地面沉降性狀、土釘受力性狀；土釘長度變化、土釘間距變化、攪拌樁樁徑變化對復合土釘支護結構的影響；復合土釘支護結構在不同地基條件下的變形特性。This is so because climbing plants are likely to encounter intensive - changing environmental condition during their growth ( especially change of illumination ). secondly, there is a large proportion ( 30 - 40 % ) of climbing plants which belong to dioecism, and hence a gap between male and female plants on morphology, biological characteristic, economic value and so on. this dissertation focuses on herbaceous climbing plants, perennial or annual species such as dioecious trchosahthes kirilowii maxin and dioscorea opposita thumb, and monoecious luffa cylindrical ( l ) roem, it attempts to discover how climbing plants adapted to various environments and the mechanism of adaptation from aspects of physiological and reproductive ecologies at present, due to overuse of chlorofluorocarbons ( cfcs ), the ozonosphere has become thinner and thinner, and the ultraviolet - b ( uv - b ) radiation has increased considerably
而攀援植物本身是一類理想的植物行為生態學研究材料：第一，攀緣植物由於受攀緣能力和支柱木資源的限制，在生長過程中通常要遇到強烈變化的環境條件（特別是光照） ；第二，攀緣植物中具有較高比例的雌雄異株類型，通常佔地區攀緣植物種類的30 40左右，不同性別的植物在形態學及生物學特性、經濟價值等方面存在一定的差距，因此，本文以雌雄異株攀緣植物栝樓（ trchosahtheskirilowiimaxim ） （葫蘆科多年生草質藤本植物）和山藥（ dioscoreaoppositathunb ） （薯蕷科薯蕷屬植物） 、雌雄同株異花攀緣植物絲瓜[ luffacylindrical （ l ） roem ] （葫蘆科一年生攀緣草本植物）為材料，試圖從生理生態學及生殖生態學角度揭示攀援植物如何適應不同生境及其機理。With the use of finite method we have developed computer simulation software for vacuum microtriodes with wedge - shaped and cone - shaped cathode on the basis of stduying deeply the field emission theory of vacuum microelectronics. the software included field section, grid point numbering, and the calculation of electric currents, transconductance and cathode capacitance, moreover, it can simulate the properties of vacuum microeletronic with variant structures and sizes. the relationship was studied and simulated among electic properties and device structures, sizes and cathode materials etc. the optimized design of vacuum microtiode was proposed
本文在深入研究真空微電子器件場致發射理論的基礎上，根據圓錐形、楔形陰極真空微電子三極體的不同特點，分別建立了物理和數學模型，在考慮空間電荷密度影響的前提下，以有限元法為基礎採用迭代的方法計算出真空微電子三極體內的電勢分佈情況，繪制出了等勢線、電子軌跡線，並得到了器件電學性能隨幾何參數的變化情況。Because of huge data quantum and high demand of channel bit error rate for video transmission, and fallibility, time variability and limited band of wires channel, wireless video system is faced with lots of problems
由於視頻業務的數據量大、對誤比特率要求高，無線通道又具有易錯、時變和帶限的特點，因此通道的誤比特率要比有線環境大得多，且隨著基站和終端位置、方向的改變而變化很大。In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab
針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。Under general geological study of exploratory development of coalbed gas and underground gasification of coal bed in eastern depression of liaohe basin, authors apply the basic principle of coal geology and the data of vitrinite reflectance and technical analysis of coal to ascertain that coal classification are dominantely the lignite, long - flame coal and gas coal of coal - bearing upper section of third member of shahejie formation, and then dissertate the variational regularity between coal rank and buried depth in vertical and otherness of vertical limit of coal rank in different coal - rich regions
摘要運用煤田地質學基本理論和煤的鏡質組反射率值及工業分析等有關數據，確定了遼河盆地東部凹陷古近系沙三段含煤亞段的煤種主要為褐煤、長焰煤和氣煤；進而闡述了該煤段垂向上煤級與埋深的變化規律性、不同賦煤區各煤級垂向界限的差異性。The studies of plane heterogeneity are as follows : the text counts the parameters of the sandlayers " geometric shape of different sedimentous microfacies ; speculates the conditions of lateral communication by sandstone density according to the method brought forward by j. r. l. allen ; gets a group of parameters including the reservoir thickness, porosity and coefficient of permeability by using kriging method according to the data of logging results ; makes certain the direction of coefficient of permeability with variation function by modeling globosity function ; divides the sandlayers into five types by using the method of flowing cell based on three parameters, that is x h, kxh and h / h, and accounts the favorable region. on the base of above - mentioned studies, the text evaluates the heterogeneity of sandlayers and gives the resolutions to these problems to serve the development of the field
Allen ）等人提出的統計方法，用垂向上砂體密度的界限來推測砂體側向連通情況；根據每口井的測井解釋資料，利用克里金插值法對外間進行插值，得到了一組反映儲層特徵在平面上變化的參數，包括儲層厚度分佈、孔隙度以及滲透率，並且成圖；利用變差函數法，通過球狀函數模擬，確定儲層優勢滲透率方向：根據流動單元法，以儲能系數、容積系數以及凈毛厚度比三個參數為依據，通過聚類分析方法進行流動單元劃分，並且按照參數特徵將其分為五類，統計各砂層有利流動單元區塊。Under the material non - compress assumption, in this paper, poisson ratio variation law under finite deformation theiory was studied, it is shown that the eular configuration is feasible considering the material non - compress assumption
在材料不可壓縮的前提條件下，分別研究了有限變形兩種構型下泊松比的變化規律，結果表明用歐拉描述方法是可行的。This idea must be included in the analytical process, or the influences to individuals ' decisions and travel behavior due to time - space constraints could not be accounted for and could not support effective policy analysis when activity patterns change
若政策分析過程中未納入此重要觀念，則一旦時空限制條件有所變化時，交通/活動行為相對改變的關系即無從得知，故亦無法有效地支援政策的擬定與實施。By comparing and analysing the computed results and the change of the raised permafrost table, a concl usion is gived that the roadbed with insulations on the permafrost protects the permafrost well under itself, and the rational position and thickness for insulation were suggested
通過對計算結果和多年凍土上限變化的分析比較，得出了在多年凍土區路基中鋪設保溫材料對路基面下多年凍土具有明顯的保護作用，總結出在多年凍土區路基工程中鋪設保溫層的合理厚度與位置。Fractal image compression coding ( ficc ) is a new image coding method developed in recent years and has been studied extensively. based on the analyze of conventional fractal coding and decoding, a fractal image coding algorithm based on changeable threshold and creative function is proposed in this paper. new algorithm is to be in accordance with the feature of human visual system
本文通過對傳統分形圖像壓縮編解碼的分析，提出了門限變化和生成函數改進的編碼演算法，此演算法在一定程度上與人類視覺系統特性相符，我們在理論上證明了在相同的條件下，用改進的生成函數恢復的圖像在質量方面比傳統的生成函數要好，恢復圖像的信噪比有所提高。The author creates a new point “ using high customer relationship intensity to establish high faithfulness customer groups and keeping high value customers by this high faithfulness ”, states and explains this point objectively on customer, telecom company and third person ’ s positrons. then based on customer value, customer faithfulness and customer relationship intensity, the author divides all customers into several groups and make different flexible market strategy and
指導聯通公司數據部針對有限的公司資源和無限變化的市場打造屬于數據聯通的三高（高價值、高忠誠度、高客戶關系強度）客戶群體，通過關注客戶以及客戶關系管理獲得業務及服務的長久生命力，不斷提升自身的核心競爭優勢。The dynamic plastic response for a pinned rigid plastic beam subjected to an arbitrary impulsive distributed load was investigated. the effect of strain hardening and strain rate sensitivity was ignored. the yielding curve was assumed to be rectangular
採用剛塑性假定，忽略應變強化效應和應變率的效應並考慮由於有限變形而導致的軸力的影響，研究任意時間歷程沖擊載荷作用下簡支梁的塑性動力響應問題。分享友人