理論斷裂強度 的英文怎麼說

中文拼音 [lǐlúnduànlièqiángdù]
理論斷裂強度 英文
theoretical rupture strength
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 論 : 論名詞（記錄孔子及其門徒的言行的「論語」） the analects of confucius
  • 斷 : Ⅰ動詞1 （分成段） break; snap 2 （斷絕;隔斷） break off; cut off; stop 3 （戒除） give up; abstai...
  • 裂 : 裂動詞[方言] （東西的兩部分向兩旁分開） open
  • 強 : 強形容詞（強硬不屈;固執） stubborn; unyielding
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 理論 : theory
  • 斷裂 : break; disrupt; flying off; fracture; fragmentation; out break; rift;crack;bursting;rupture;rendi...
  1. By means of bending tests of three - point and four - point, complex fracture experiments were made for cast iron material with crack. the stress intensity factor and breaking direction angle of cast iron material were measured and compared with theoretical values. based on the research some useful conclusions are given for engineering design and application

    通過3點彎曲和4點彎曲實驗方法，對含有裂紋的鑄鐵材料進行復合型斷裂實驗研究，測試鑄鐵材料的應力強度因子、斷裂方向角，將實驗結果與理論值進行分析、比較，找出兩者之間的異同點，得到一些對工程設計及應用具有實際意義的結論。
  2. The important meaning in which this direction studied has lain in establishing the connection between the material science of concrete and civil engineering, analyse the strength in terms of material microcosmic or the mesoscopic, have important meaning to understanding, know the essential law of the strength of concrete. this text divides six chapters altogether. chapter one reviewed the pore structure in nowadays domestic and international research current situation, including the concrete examines research, research of the pore structure model and the research current situations of pore structure and strength relation of the pore method, have introduced some most important achievements of structure research of pore ; chapter two narrated much yardstick of the material mesoscopic structure of concrete and principle of examining pore technology of material of concrete, and the commonly used sign parameter in discussedding the pore and material pore of quito of cement and analyse, have explained that the influence factor of mip to the result of study of pore, has pointed out the limitation in mip in the pore structure ; analyse porosity and strength relation development course of model emphatically, and has carried on comparative analysis to the existing model, has pointed out the weak point of the original model ; on the basis of " ing integrate synthetically ", propose concrete pore structure compound body model and pore physical model of systemlex body ; chapter five carried on the corresponding test data to compares to the model parameter appearing in model of chapter four with and analyses, have received k value of the characteristic of strength of matrices of reflecting according to the method to return to analysis, and calculate the influence produced on the strength of concrete in revision that can probed into the content of cement, elastic mould and surface energy, exactness of the inspection model ; chapter six is the conclusion, according to studying the survey this text to some research conclusions of the pore structure and making corresponding prospect to the structure development of pore

    第一章回顧了孔結構在當今國內外的研究現狀，包括混凝土測孔方法的研究、孔結構模型的研究及孔結構與強度關系的研究現狀，介紹了孔結構研究方面的一些最重要的成果；第二章敘述了混凝土材料細觀結構的多尺度性及混凝土材料測孔技術的原理，並討論了水泥基多孔材料孔隙分析中常用的表徵參數，也說明了壓汞法測孔對研究結果的影響因素，指出了壓汞法在孔結構研究中的局限性；第三章是著重分析了孔隙率與強度關系模型的發展歷程，並對已有的模型進行了比較分析，指出了原有模型的不足之處；第四章在「綜合集成」的基礎上，提出了混凝土孔結構復合體模型和孔系統的物理模型，並模擬了該模型下由各單體並聯形成的復合體的斷裂過程，最後根據所建模型編制了相應的計算程序，可根據輸入的孔徑分佈與水泥含量等參數，實現混凝土理論強度的計算；第五章對第四章模型中出現的模型參數進行了相應的試驗數據對比分析，根據回歸分析的方法得到了反映基體強度特徵的k值，並從理論上探討了水泥含量、彈性模量和表面能的修正對混凝土強度計算產生的影響，檢驗模型的正確性；第六章是結論與展望，根據研究綜述了本文對孔結構的一些研究結論並對孔結構發展作了相應的展望。
  3. Safety of structures is a common and important problem in the mechanical engineering. recent years there is a trend of developing unified theory of fatigue and fracture to describe the life - cycle damage behaviour of structures. researches on safety guarantee are going toward multi - method synthesis, system micromation, network availability and life - cycle information management

    結構的安全性一直是工程中普遍關心的重要問題，結構強度學逐漸發展到疲勞斷裂統一理論，結構安全保障手段已向多方法、微小化、網路化和全壽命在線保障與監測發展，建立全壽命安全保障系統，涉及材料、機械、力學、電子等學科的交叉融合。
  4. 2. because the fracture mode of 3d braided cmc is the interfacial fracture of mode i and mode ii, energy release rate gc and complex stress intensity factor kc was designated as characterization parameters of fracture toughness in the linear fracture theories. 3

    根據三維編織c sic復合材料斷裂韌性的表徵問題屬于線彈性理論范疇以及材料斷裂模式是界面損傷破壞模式的實驗研究結果，提出了該材料的表徵參量應該使用與界面相關的型和型混合斷裂的能量釋放率g _ c ，或者使用復應力強度因子k _ c 。
  5. In order to use the strength and toughness index for design and apply of sfrc unified theoretical calculation formula of reinforcing and toughening of sfrc is given. experiments on bending toughness, breaking toughness and cube strength test results are carried out in connection with various kind of deformed steel fiber

    初步給出建立鋼纖維混凝土增強、增韌統一理論計算公式思想，為鋼纖維混凝土強韌雙重指標在設計、選用鋼纖維混凝土中的應用打下基礎；針對不同種類異形鋼纖維進行了彎曲韌性、斷裂韌性、立方體抗壓強度等試驗。
  6. We research the causes of concrete cracking, develop the high performance anti - cracking additive, optimize the concrete mix and construction techniques, increase the stability of concrete volume by shrinkage compensation, enhance splitting tensile strength, and can meet demand of high workability of fresh concrete. in the study, a thorough investigation of this problem is made from all points of view, with the aid of various modern measurement & testing technology and different theories & methods in surface physical chemistry, structural chemistry, solid - state chemistry, composite materials, fracture mechanics, etc. our research results have shown that the various shrinkage of concrete cause concrete cracking in building engineering, such as autogenous shrinkage, dry shrinkage, temperature shrinkage, plastic shrinkage, carbonized shrinkage, etc

    目前，解決混凝土開裂的方法是綜合的，我們調查研究了混凝土開裂的原因，開發研製了高性能抗裂外加劑，優化混凝土的設計和施工方法，並通過補償收縮達到混凝土體積穩定，提高抗裂強度，滿足混凝土拌和物高工作性能的要求。本研究採用多種測試技術，應用表面物理化學、結構化學、固體化學、復合材料學、斷裂力學等多學科的理論與方法，從不同的角度進行深入的研究和探討。通過調查研究建築工程中出現的混凝土開裂、滲漏問題，發現混凝土在非荷載作用下開裂主要是由混凝土的自收縮、乾燥收縮、溫度收縮、塑性收縮、碳化收縮等各種收縮變形引起的。
  7. Using the complex potential method in the plane theory of elasticity of an anisotropic body, a series solution to the stress field of a finite plate containing multiple cracks subjected to arbitrary loads is obtained by means of the faber series expansion, and the stress intensity factors at the crack tips are calculated based on the theories of fracture mechanics. equivalence yield stress is introduced in order to consider the effects of the plastic zones, with which the strip yield criteria is developed in the article so that the effects of structural size and the crack interactions on the stress distribution can be considered accurately. the effects of plate size, crack size and crack distributions on the stress intensity factors as well as the residual strength of the plate are studied detailedly

    採用各向異性體平面彈性理論中的復勢方法，以faber級數為工具，得到了含多裂紋有限大板在任意載荷作用下應力場的級數解，並應用斷裂力學方法確定裂紋尖端的應力強度因子；引入當量屈服應力考慮裂尖塑性區的影響，提出基於帶屈服準則的剩餘強度分析模型，能夠充分考慮結構尺寸和裂紋之間相互作用對應力場的影響；通過數值計算詳細討論了結構尺寸和裂紋之間位置關系對應力強度因子和結構剩餘強度的影響規律，得到了一系列對工程應用具有實用價值的結論。
  8. Barrier cracks cannot stop the extending of a fracture, and the strength of the sample is reduced by almost one magnitude because of the existing barrier cracks. there are great differences of ae distribution between specimens with non - penetrate crack and specimens with penetrate crack. as for penetrate crack, ae occurs near the two end of the crack, and for non - penetrate crack, crack, ae occurs near the two end of the crack, and for non - penetrate crack, ae occurs near the front edge of crack, which can be explained well by the theory of 3 - d fracture ; ae distribution near the outer part of collinear crack is similar with that of the end of penetrate crack, and inner part of collinear cracks will run - through with high loads

    關于預制裂紋系對巖石破裂的影響，集中討論了：空障礙體構造不能阻止主裂紋的擴展，反而會使巖石的破裂強度降低近一個量級；由於構造的不同，非穿透切口樣品和穿透切口樣品的聲發射空間分佈特點有本質區別，穿透切口樣品的微破裂在切口兩端發育，而非穿透切口樣品的微破裂在切口兩端之間切口前緣處發育，這用三維破裂理論可以很好地解釋；含共線構造的巖石，裂紋外端的聲發射分佈與單裂紋構造中裂紋端部的聲發射分佈相似，裂紋內端聲發射有密集分佈，在應力達到一定水平時，內端部發生錯斷，而不是貫通。
  9. Based on these results and the theory of fracture mechanics set up the new evaluation method ? racture - cmod toughness method. the concept of strength and toughness index of steel fiber concrete is founded

    在此基礎之上，建立了以斷裂力學為理論基礎的鋼纖維韌性評測方法? ?斷裂cmod韌度指數法；提出鋼纖維混凝土強韌雙重指標概念。
  10. I. a mtil ( iaxial elastic - plastic hardening - sofling constitutive model of concrete is proposed iii order to offer a nonlinear material model of concrete for space restoring force analysis of reinforced concrete members taking into account the softening behavior of concrete. the concrete material model is incorporated the elastic - plastic hardening fracturing constitutive model of concrete with the plastic - fracturing theory of concrete, modified without defining two loading functiomis, and based on five parameter power function failure criterion proposed by guo zheng - hai etc from tsingliua ( jniversity, or three parameter unified strength theory proposed by yu mao - hong from x ian iiaotong university

    1 、將砼彈塑性硬化斷裂本構模型與塑性斷裂理論結合起來，並加以改進，但無需定義兩個加載面，以清華大學過鎮海建議的五參數冪函數或以西安交通大學俞茂宏建議的，參數統一強度理論作為砼的強度破壞準則，建立了砼多軸彈塑性硬化松馳本構模型，能為鋼筋砼構件空間恢復力分析提供砼非線性材料模型，並能反映砼材料的軟化段。
  11. Study on characteristics of failure for frozen soil is one major component of frozen soil mechanics

    本文採用斷裂力學方法對其破壞進行研究與分析，以期建立一種新的破壞準則-廣義強度破壞理論。
  12. The micromechanisms of fracture in engineering materials have been studied in this thesis, with particular emphasis on the dislocations behavior in the front of crack tip and the processes of crack nucleation and propagation on nanometer scale. the relation between the microprocesses of fracture and the macromechanical behaviors were investigated, which will be helpful to the strengthening and toughening of engineering materials

    本文首先對材料斷裂文獻進行綜述，了解斷裂微觀機理研究的過去成就、現狀和發展，確定本文研究的內容為工程材料斷裂的微觀機理，側重裂尖微區位錯行為和納米尺度上微裂紋形核與擴展過程及微觀組織的影響，斷裂微觀過程與宏觀力學行為的關系，為工程材料的強韌化提供理論依據。
  13. Simultaneity, various single fiber strength tests ( sft ) and the single fiber fragmentation techniques were discussed, and the influence of fiber surface treatment on the single fiber strength and the interface load - transfer were discussed in detail. the two parameters weibull statistic theory was used to evaluate the scattering of the tensile strength test results of three types of single fibers with different surface treatments. the following conclusions can be drawn based on the analysis of the results

    同時，文中詳細討論了單纖維強度測試實驗（ sft ）和單纖維復合材料斷裂實驗（ sfc ） ，重點討論了纖維表面處理對單纖維拉伸強度和界面載荷傳遞能力的影響；採用兩參數weibull統計理論對經過三種不同表面處理的單纖維拉伸強度的測試結果的分散性進行了評價，獲得了理想的實驗結果；分析實驗結果可得到如下結論， sft實驗與sfc實驗獲得的界面剪切強度吻合良好；經過表面處理的玻璃纖維的界面粘結情況較未經處理的玻璃纖維好；經過表面處理的玻璃纖維的界面粘結強度和單纖維拉伸強度均高於未經表面處理的玻璃纖維。
  14. Abstract : the relation between material strength, toughmess and other physical parameters was inferred by means of dislocation theory and statistical theory on fracture, and a comparison was made between the inferred calculation result and theexperiment value

    文摘:利用位錯理論和斷裂統計理論推導出強度和韌性與其它物理量之間的函數關系，並將推導的計算結果與實驗值進行了比較。
  15. At the same time, bem formulae for interface crack analysis of thermal barrier coated structures are given in this paper. the method to evaluate nearly - singular integrals over crack tip elements and the formulae for calculating stress intensity factors ( sif ) using open and slip displacements on crack faces are presented too

    基於邊界元法、斷裂力學等基本理論，本文導出了帶熱障塗層構件界面裂紋的斷裂特性分析邊界元法公式；結合先進的近奇異積分技術處理裂尖元的近奇異積分，利用位移法計算層間界面裂紋的應力強度因子。
  16. ( 6 ) the abnormality criteria of fracture mechanics are employed to diagnose the abnormality of the crack, and the inversion of the concrete fracture roughness is studied. the space prediction model of the anomalous load is presented using neural network. the load surface of stress intensity factor and its corresponding plane is given and employed to diagnose and predict the abnormal load of the crack

    （ 6 ）應用斷裂力學理論，對裂縫轉異進行診斷，並探討了混凝土斷裂韌度的反演分析方法；建立了反映荷載組合與應力強度因子之間關系的神經網路模型，反饋分析裂縫的轉異荷載，在此基礎上，研製了應力強度因子的三維荷載曲面圖以及相應的二維平面圖，提出裂縫轉異荷載的空間預報模型；並通過實例驗證。
  17. Further, the mechanical behavior and fracture features under flexural load of the c / sic composites are discussed with mechanical properties contract to microstructure and cvi - pip process parameters. the multiple fracture phenomenon of the c / sic with high toughness connected to multiple interface fracture is found, which supplements the conventional composite theory on the relationship between strength and fracture mode

    聯系化學組成及微結構參數、工藝參數，進而研究了彎曲載荷下該c / sic復合材料的行為特徵和失效過程，發現了一種與多重界面失效緊密聯系的、高斷裂韌性的多重損傷累積型材料破壞現象，補充了傳統的脆性基體復合材料強度一斷裂韌性理論。
  18. The proposed formula is in accordance with the old one, and the affect of nonlinear material properties of concrete and steel bars is considered by an adjusting coefficient. 6 ) based on theoretical and experimental research on material characters of steel fibered reinforced concrete, a finite element model for nonlinear analysis of steel fiber reinforced ( sfrc ) structures is presented. two - dimensional analysis on various sections of the orifice in the xiao wan arch dam is carried out

    6 ）根據已有的鋼纖維混凝土基本理論和試驗研究成果，建立了鋼纖維混凝土（ sfrc ）的有限元模型，對小灣拱壩的1 ~ #底孔斷面進行了非線性分析，研究了大連理工大學博士學位論文採用不同厚度的鋼纖維混凝上增強層和不同摻量的鋼纖維對孔口抗裂、限裂性能的影響。
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