界限應力 的英文怎麼說

中文拼音 [jièxiànyīnglì]
界限應力 英文
threshold stress
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 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...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 界限 : 1 （分界） demarcation line; dividing line; limits; bounds; boundary; range; limitation 2 （限度...
  1. 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。
  2. Abstract : for analyzing the residual stress distributing state within the weld joint, and its effect on the performance of welding structure, when welding the ferrite pearlite steel with the austenite steel, this paper develops a finite element program to compute the interface stress of two or over two material. finally, this program is used to analyze the mechanical behavior of heterogenic joint

    文摘:為了分析鐵素體、珠光體類鋼與奧氏體類鋼焊接時，焊接接頭處焊接殘余應力的分佈狀態及其對焊接構件性能的影響，研製了可計算兩種或兩種以上材料界面應力的有限元程序，並用此程序分析了異質接頭的力學行為。
  3. It can be said that the solution to the space problem of limit load and the calculation of foundation bearing capacity for deformed groundwork have some academic and scientific value. the dynamic pile testing of foundation and batholith as well as deep well load testing system has been put into use in real work environment and gained some social and economic benefit

    本文關于界限荷載的空間問題解答，考慮地基變形的地基承載力工程演算法具有一定的學術價值；本文中的地基（及巖基）承載力動測法及深井載荷試驗系統已在工程實踐中應用，並取得了較好的社會和經濟效益，具有一定的工程實用意義。
  4. 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。
  5. In the gravitational field of the earth, negative energy corresponds to bounded motion and positive energy to unbounded motion.

    在地球的重力場中，負的能量相應于有界限運動，正的能量相應于無界限運動。
  6. The study indicate that the surface form has no effect on kl, but has obvious effect on kll, and will affect the breaking angle and mode ; in finite plate, the boundary condition has effect on the sif and the k is bigger than in infinite plate ; the effect of the distance and the angle between cracks are all have obvious effects on the multiple crack interaction, and the interactions between cracks also have obvious effects on the sif, which can be neglect only when the distance is bigger enough

    研究表明：裂面狀態對k _的大小沒有影響，而對k _的影響卻很大，相同應力條件下，裂面狀態會影響裂紋的開裂角和開裂方式；有限板的邊界對應力強度因子有一定的影響，其k比無限板中的k略大；裂紋間的距離、夾角等因素對裂紋間的干涉效應均有較大影響，裂紋間的干涉效應對應力強度因子的影響非常顯著，只有當裂紋間的距離充分大時，干涉效應才可忽略。
  7. In this paper, the bend stress of engine crankshaft was analyzed by the finite element method ( fem ). an one - fouth crankthrow fe model is used to analyze it taking different boundary conditions into account

    本文用有限元法計算分析了發動機曲軸的彎曲應力。採用1 4曲拐有限元模型對不同邊界條件進行了研究，計算了安全系數。
  8. This paper also researches on thermal elastoplastic analysis model of multilayered graded coating structures on the basis of thermal elastoplastic analysis model of trilayered materials with the focus on the structural character of graded coating. it builds the thermal elastoplastic analysis theory for the graded coating structure that has a single plastic layer or two plastic layers. it gives the analytical formulas of thermal stresses and the thermal elastic - plastic transform temperatures of graded coating that has a single plastic layer or two layers under the thermal loading

    針對梯度塗層的結構特徵，在建立的三層疊層材料熱彈塑性分析模型的基礎上，對多層梯度塗層結構的熱彈塑性分析模型進行了研究，分別建立了含單個塑性層和兩個塑性層的梯度塗層結構的熱彈塑性分析理論，給出了在熱載荷作用下含單個塑性層和兩個塑性層的梯度塗層的熱彈性-塑性臨界溫度和熱應力分析公式，利用有限元分析對理論模型進行了驗證。
  9. 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。
  10. Finally, an energy approach is combined with the fem in the simulation of the crack propagation along the fiber / matrix interface in a pull out process. the simulated results are in nice conformity with experimental results. the second part of the research deals with the characterization of the failure process in the fragmentation tests, which is one of the most frequently used test methods in studying thermal mechanical properties of fiber / matrix interfaces

    在這一部分工作的最後，採用能量法與有限元法結合起來，模擬纖維抽拔試驗中裂紋的擴展:針對以往研究工作中的不足之處，在模擬中使用能量釋放率，在表徵界面破壞時，所使用的應力強度因子考慮了纖維和基體兩種材料的不同屬性，並考慮裂紋尖端的單元奇異性，來研究裂紋長度和溫度對裂紋擴展的影響。
  11. Here, fem is applied in the analyses of i ) fiber axial stress and interphase shear stress in fragmentation tests during initially applied strain, ii ) influence of temperature on the stress transfer across the interface, iii ) modulus and thickness of the interphase and their influence on interfacial stress transfer, iv ) interfacial debonding process, and v ) fragment aspect ratio, contact friction along the interface and their influences to the interfacial stress transfer efficiency

    在論文的這部分工作中，使用有限元法描述和分析了逐節斷裂試驗中初始應變下的纖維軸向應力和界面相剪切應力，溫度對界面應力傳遞的影響，界面相模量和厚度、纖維節長寬比、界面脫粘過程、界面接觸中的摩擦效應等因素對逐節斷裂試驗中應力傳遞的影響。
  12. In this paper, an analytic method is developed for the problem of scattering of steady sh - wave and dynamic analysis of multiple circular cavities in half space

    建立了求解半無限空間中界面附近相鄰多個圓形孔洞對sh波散射與動應力集中問題的解析方法。
  13. In the hogging condition, double bottom and the side shell remain the ultimate bucking strength, deck and upperwing tank remain the yield stress, and the other parts keep elasticity. then the key to calculate the ultimate strength of ship hull girders is to ascertain the ultimate bucking strength of the stiffened panels. in this regard, the developed formulation is designed to be more sophisticated than previous simplified theoretical method for calculating the ultimate strength of stiffened panels under combined in - plane bending and lateral pressure. fabricatio n - related initial imperfections ( initial deflections and residual stresses ) are included in the panel ultimate strength calculation as parameters of influence. all possible collapse modes involed in collapse of stiffened panels, including overall buckling collapse, column or beam - column type collapse, tripping of stiffeners and local bukling of stiffened web are considered

    確定了船體梁整體破壞時的剖面應力分佈之後，關鍵在於確定板架的極限屈曲強度。本文充分考慮了在縱向彎曲、橫向壓力作用下加筋板可能發生的幾種破壞模式，即板架的整體屈曲破壞、樑柱形式的破壞、筋的側傾、腹板的屈曲並同時考慮了初始焊接殘余應力、初撓度的影響，使其更精確的計算加筋板的屈曲強度。對于加筋板中加強筋腹板的局部屈曲，採用解析法推導出筋的腹板的撓度方程及其邊界條件，求解相應的方程，從而計算出腹板的局部屈曲應力。
  14. The dissertation is divided into six chapters. chapter 1, summary, which explain the importance of the topic and suggest the system, method, and main contents of this dissertation. chapter 2 : the research of the theory of national debt and the practice of the debts issuing in china, in this part, we sum up the theory of national debts and the method of researching moderate scale in china and other countries. chapter 3 : the analysis of burden of national debts in china, which analyze the debts " burden by the rate of debts " burden and the rate of repayment of debts and the degree dependence of debts and so on. chapter 4 : influence factor study of the reasonable limit of national debts " quantity, in this chapter we get the factors that mostly affect the scale. using the actual datum and modern econometric and statistical analysis method, we conclude that the repayment of capital and interest and the finance deficit are the most important factors

    第二章國債理論研究進展和我國的國債實踐，綜述國內外國債理論研究的進展和我國國債發行的實踐以及國債適度規模的研究方法。第三章我國國債債務負擔分析，主要從政府償債能力和社會應債能力兩方面，選取了債務依存度、國債負擔率和國債償債率等指標，通過橫縱對比，對我國國債債務負擔進行了分析。第四章債務負擔合理數量界限的影響因素分析，選取了九個與國債密切相關的指標，通過多重共線性診斷、最佳回歸模型的選擇分析，最後選定國債還本付息額和財政赤字兩個與國債規模最密切的指標。
  15. The interface mechanical finite element matrix matching method and the thermal stress for the masonry envelop in the wall of melting furnace

    熔煉爐壁中砌體的界面力學有限元矩陣對號入座法與熱應力
  16. The finite element model and result are given. the influence on displacement of different finite element model ' s lateral boundary and the cavities " radius and the variety of dynamic stress concentration at different ratio of long - axis divided to short - axis and material are discussed

    給出了有限元模型和計算結果，討論了有限元橫向邊界不同和孔徑大小不同的情況下對位移的影響，還討論了不同長短軸比和不同材料情況下動應力集中系數的變化。
  17. The critical crack and stress put forward provides theoretic foundation for monitoring portal machine. 3. applying steady theory of board, studying the problem of early curvature, flexibility model, welding remaining stress, elastic transmutation and brace condition and so on, conclude that structure of beam is primary place where metal structure of portal crane lose stabilization and the break of main beam is result of losing partial stabilization of main board

    文章提出的界限應力和臨界裂紋對于港口機械的監測提供了理論依據； 3 、運用板的穩定理論，探索了作為薄壁構件的門機金屬結構在失穩破壞中所涉及到的初曲率問題、彈性模量問題、焊接殘余應力問題、彈塑性變形問題以及支承條件問題等，得出了門機金屬結構發生失穩破壞的主要部位為臂架結構，且主臂架的折斷是由於受壓翼板局部失穩引起整體破壞； 4 、探討了焊接對結構承載的影響。
  18. Standard test method for determining a threshold stress intensity factor for environment - assisted cracking of metallic materials

    測定金屬材料環境致裂的界限應力強度因子的標準試驗方法
  19. Study on the stress of dlc mct interface by finite element method

    晶體界面應力的有限元分析
  20. An non - linear finite element analysis of double shear testpiece of rubber - steel bimaterials has been finished. for the testpiece without crack, the stiffness of the testpiece and the stress distributions of the interface have been given

    對無初始裂紋和含初始裂紋的橡膠鋼雙剪切試件進行非線性有限元分析，了解試件剛度和界面應力的變化情況。
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